The AZT2320 is a PnP card, so if I were to use it with a 286 processor, I would choose Unisound as the “driver.”

Your wavetable card will probably (99,9%) only play in MIDI mode. This is due to how it is connected to the main sound chip on the card (waveblaster connector). FM mode (Adlib) will be handled by the OPL3 located in the Aztech chip.

Will the MIDI track sound better than on the AWE32/64? Well, that's rather a subjective feeling.

The EGA card is backward compatible with CGA, so everything CGA should just work.

renejr902 wrote on 2025-10-03, 08:46:

I have this wonderful sound card.

1. i read that crystal cs9233-cq chip on the midi daughther board can do the FM in games. But i dont want to do this because a lot of people says it sounds bad and strange in FM games. But the aztech card has a real yamaha opl3 on it. How can i use the opl3 for fm instead of the cs-9233 midi card ?

The wavetable board only does MIDI-in and audio out, so no way for it to do FM. Any FM is handled by the AZT2320 and as it contains a licensed OPL3, it does it well.

2. I want to use the midi daughther board for general midi game like doom and duke3d, i suppose its better than FM, right ? it uses cs4112 set and it should be a roland set instrument, so even if the ram is 1mb only it should be better , right ?

"Better" is a matter of taste, but if game music is GM, the output of the daugtherboard will almost certainly be more faithful to the original than OPL trying to synth it.

3. Does this card in general midi games sounds better than awe64 ct4500 at 512k ram ? for example in doom, duke nukem...

That's really a matter of taste, they will probably be close in objective quality. AWE is decent but not great, the Crystal/Dream synths have a good reputation, but quality depends a lot on the sample set used. It's not going to be comparable to a 4MB GM/GS (i.e. 1:1 SC-55 clone) set. I'd suggest trying it out and seeing which you like more.

4. I read that you can set it like a mt-32 until reboot, it should be interesting for monkey island. but not sure its faithfull enough to a real mt-32, but how i can do that ? i dont get it.

MT-32 differs from later GM synths in two ways:
- different instrument set/layout
- use of subtractive (LA) synthesis as well as samples

A purely ROM sample-based synth can load an instrument map that corresponds to the MT-32 instrument set, but it can't emulate the LA synthesis. If a game that supports MT-32 only uses samples, it will sound pretty close, but if the game does a lot of LA stuff, it won't sound at all like it.

It sounds like you have some good documentation on this Aztech card though, I've never come across this sort of detail about their settings. Could you share it perhaps?

5. i cant find the driver for this exact card, if nobody know where i can find it, i will use the better fit on aztech download section at dosdays.

Under DOS?

It doesn't need any drivers under DOS; all you need is to PnP initialize the AZT2320. It has hardware compatibility with SBPro 2.0, WSS and UART MPU-401. In Windows 98SE there are drivers for the AZT2320 built in so no additional software needed there either.

I second the suggestion to use Unisound for that.

If you really want the Aztech software, you need to identify the card unambiguously, which is hell given Aztech's inconsistent naming. The one unique identifier is the FCC-ID. This card looks like an MMSN855. You can check that on the PCB, it's just under the wavetable header, on your photo you can see where it starts "FCC"... Now, if it's an MMSN855 Aztech software might be a challenge as that's a Packard Bell specific OEM card, referred to as the "Rocky 2.5" internally at Packard Bell. I don't think there is any software for that on Aztech's site. However, tools from any other AZT2320-based card should work, so you could try stuff from say the Sound Galaxy Pro16 III-3D PnP (basically the same card minus the onboard modem). But I personally just use Unisound - I have this card in my late DOS system next to an AWE64 Gold and a Gravis Ultrasound. I use it for its real OPL3, bug-free UART MPU-401 and good clean SBPro 2.0 support.

6. with this card and daughter board can i use GM in pure dos ? ( for doom and duke nukem... )

Yes. It's really 'dumb', no config or init needed or indeed possible: just set the MPU-401 address for the AZT2320 (using Unisound) and tell software to use that. When it does, General MIDI will play.

7. can i remive the daughter midi card and put in on one of my sound blaster 16 ? ( i know about bug note sound )

If the Sound Blaster 16 has a wavetable header: yes. But I'd recommend against it - this Aztech card is bug-free, has low self-noise and a real OPL3. If you really want SB16, I'd put both cards in the system and run the wavetable on the SB16. You could even put an AWE64 next to it like I have done. All you need to do is select different MPU addresses and use those different addresses to point software to the one you want to use.

8. by curiosity, is it expensive card with a lot of value ? is it a card that collector want ? ( i just saw the midi board at 250$ canadian in ebay )

Aztech cards are pretty unloved, mainly because they were used by OEMs and people assume - incorrectly - that they would be worse than retail cards. The base MMSN855 card is common as muck and one I frequently recommend to people on a tight budget looking for a good bug-free DOS ISA sound card. The wavetable module is slightly less common but still nothing special. Remember that eBay prices that stay up longer than a few hours are precisely the ones no one wanted to pay. With patience and alertness you should be able to find one like this for less than half that price. Or put another way: this thing is probably broadly comparable to the Serdaco Dreamblaster S2, which sells new for EUR 35, or a bit less than CAD 60.

9. Can my NEC monitor works as a CGA, seems to work only in ega mode ? ( with oak 0ti037c )

EGA is (broadly speaking) a superset of CGA on TTL monitors like this. If it works as EGA, just tell your software to use CGA and you should get CGA output. If software autodetects EGA because of the card's capabilities, that's not the monitor's fault. Replace the card with a 'real' CGA card to fix that.

dionb wrote on 2025-10-03, 11:00:

The wavetable board only does MIDI-in and audio out, so no way for it to do FM. Any FM is handled by the AZT2320 and as it conta […]
Show full quote

renejr902 wrote on 2025-10-03, 08:46:

I have this wonderful sound card.

1. i read that crystal cs9233-cq chip on the midi daughther board can do the FM in games. But i dont want to do this because a lot of people says it sounds bad and strange in FM games. But the aztech card has a real yamaha opl3 on it. How can i use the opl3 for fm instead of the cs-9233 midi card ?

The wavetable board only does MIDI-in and audio out, so no way for it to do FM. Any FM is handled by the AZT2320 and as it contains a licensed OPL3, it does it well.

2. I want to use the midi daughther board for general midi game like doom and duke3d, i suppose its better than FM, right ? it uses cs4112 set and it should be a roland set instrument, so even if the ram is 1mb only it should be better , right ?

"Better" is a matter of taste, but if game music is GM, the output of the daugtherboard will almost certainly be more faithful to the original than OPL trying to synth it.

3. Does this card in general midi games sounds better than awe64 ct4500 at 512k ram ? for example in doom, duke nukem...

That's really a matter of taste, they will probably be close in objective quality. AWE is decent but not great, the Crystal/Dream synths have a good reputation, but quality depends a lot on the sample set used. It's not going to be comparable to a 4MB GM/GS (i.e. 1:1 SC-55 clone) set. I'd suggest trying it out and seeing which you like more.

4. I read that you can set it like a mt-32 until reboot, it should be interesting for monkey island. but not sure its faithfull enough to a real mt-32, but how i can do that ? i dont get it.

MT-32 differs from later GM synths in two ways:
- different instrument set/layout
- use of subtractive (LA) synthesis as well as samples

A purely ROM sample-based synth can load an instrument map that corresponds to the MT-32 instrument set, but it can't emulate the LA synthesis. If a game that supports MT-32 only uses samples, it will sound pretty close, but if the game does a lot of LA stuff, it won't sound at all like it.

It sounds like you have some good documentation on this Aztech card though, I've never come across this sort of detail about their settings. Could you share it perhaps?

5. i cant find the driver for this exact card, if nobody know where i can find it, i will use the better fit on aztech download section at dosdays.

Under DOS?

It doesn't need any drivers under DOS; all you need is to PnP initialize the AZT2320. It has hardware compatibility with SBPro 2.0, WSS and UART MPU-401. In Windows 98SE there are drivers for the AZT2320 built in so no additional software needed there either.

I second the suggestion to use Unisound for that.

If you really want the Aztech software, you need to identify the card unambiguously, which is hell given Aztech's inconsistent naming. The one unique identifier is the FCC-ID. This card looks like an MMSN855. You can check that on the PCB, it's just under the wavetable header, on your photo you can see where it starts "FCC"... Now, if it's an MMSN855 Aztech software might be a challenge as that's a Packard Bell specific OEM card, referred to as the "Rocky 2.5" internally at Packard Bell. I don't think there is any software for that on Aztech's site. However, tools from any other AZT2320-based card should work, so you could try stuff from say the Sound Galaxy Pro16 III-3D PnP (basically the same card minus the onboard modem). But I personally just use Unisound - I have this card in my late DOS system next to an AWE64 Gold and a Gravis Ultrasound. I use it for its real OPL3, bug-free UART MPU-401 and good clean SBPro 2.0 support.

6. with this card and daughter board can i use GM in pure dos ? ( for doom and duke nukem... )

Yes. It's really 'dumb', no config or init needed or indeed possible: just set the MPU-401 address for the AZT2320 (using Unisound) and tell software to use that. When it does, General MIDI will play.

7. can i remive the daughter midi card and put in on one of my sound blaster 16 ? ( i know about bug note sound )

If the Sound Blaster 16 has a wavetable header: yes. But I'd recommend against it - this Aztech card is bug-free, has low self-noise and a real OPL3. If you really want SB16, I'd put both cards in the system and run the wavetable on the SB16. You could even put an AWE64 next to it like I have done. All you need to do is select different MPU addresses and use those different addresses to point software to the one you want to use.

8. by curiosity, is it expensive card with a lot of value ? is it a card that collector want ? ( i just saw the midi board at 250$ canadian in ebay )

Aztech cards are pretty unloved, mainly because they were used by OEMs and people assume - incorrectly - that they would be worse than retail cards. The base MMSN855 card is common as muck and one I frequently recommend to people on a tight budget looking for a good bug-free DOS ISA sound card. The wavetable module is slightly less common but still nothing special. Remember that eBay prices that stay up longer than a few hours are precisely the ones no one wanted to pay. With patience and alertness you should be able to find one like this for less than half that price. Or put another way: this thing is probably broadly comparable to the Serdaco Dreamblaster S2, which sells new for EUR 35, or a bit less than CAD 60.

9. Can my NEC monitor works as a CGA, seems to work only in ega mode ? ( with oak 0ti037c )

EGA is (broadly speaking) a superset of CGA on TTL monitors like this. If it works as EGA, just tell your software to use CGA and you should get CGA output. If software autodetects EGA because of the card's capabilities, that's not the monitor's fault. Replace the card with a 'real' CGA card to fix that.

Wow! You know so much things, i'm always impress by your answers. Thanks so much. I will check again where i found this info about mt-32 compatibility and let you know.

I tried a ati small wonder cga isa card and the nec multi sync plus, show me a screen that is gamble, when like a use a ega card on my cga monitor. But the nec multi sync plus have some switch setting at back i will play with them. i checked in the nec manual and it says that monitor sync to 21kz to 85hz. cga sync at 15khz, but i dont know if its important that the nec monitor dont sync at 15khz

i just add a few pictures of rares cards i just got. look at the strange R.O.C sound card, that use a vibra16s and a real yamaha opl3 and no mention of creative or sound blaster anywhere. i will try a sound blazter 15 driver, if it doesnt work i will use any sound. the 3 others cards are dual cards with db15+db9 this should be both vga+ega compatible card. the tseng card looks nice

Looks the pictures, they are nice

Which is the more powerful video card ? i suppose its the tseng

zyga64 wrote on 2025-10-03, 09:08:

The AZT2320 is a PnP card, so if I were to use it with a 286 processor, I would choose Unisound as the “driver.” […]
Show full quote

The AZT2320 is a PnP card, so if I were to use it with a 286 processor, I would choose Unisound as the “driver.”

Your wavetable card will probably (99,9%) only play in MIDI mode. This is due to how it is connected to the main sound chip on the card (waveblaster connector). FM mode (Adlib) will be handled by the OPL3 located in the Aztech chip.

Will the MIDI track sound better than on the AWE32/64? Well, that's rather a subjective feeling.

The EGA card is backward compatible with CGA, so everything CGA should just work.

thanks for the answers. Check my last post its interesting

renejr902 wrote on 2025-10-05, 01:47:

[...]

Wow! You know so much things, i'm always impress by your answers. Thanks so much. I will check again where i found this info about mt-32 compatibility and let you know.

I tried a ati small wonder cga isa card and the nec multi sync plus, show me a screen that is gamble, when like a use a ega card on my cga monitor. But the nec multi sync plus have some switch setting at back i will play with them. i checked in the nec manual and it says that monitor sync to 21kz to 85hz. cga sync at 15khz, but i dont know if its important that the nec monitor dont sync at 15khz

21-85kHz? That would be unusual for an EGA monitor, as 21.85kHz is EGA hi-res mode, but a lot of software uses low-res mode at 15.7kHz (same as CGA) so would not display on a monitor unable to support it. Do you have the exact model number (NEC made a lot of "Multisync Plus" branded monitors) or a pic of the back of it?

i just add a few pictures of rares cards i just got. look at the strange R.O.C sound card, that use a vibra16s and a real yamaha opl3 and no mention of creative or sound blaster anywhere. i will try a sound blazter 15 driver, if it doesnt work i will use any sound.

Creative sold Vibra chips to basically anyone who wanted them. This looks like a very basic implementation of one. It says it's "Magic S32", which is an Acer card.

As with the Aztech card, this is a PnP card but otherwise a full hardware Sound Blaster. It does not need any drivers under DOS, it just needs PnP initialization. Unisound would work for this one too, otherwise the usual (irritating) Creative PnP tools. If you're running an OS that does use drivers, specify which.

the 3 others cards are dual cards with db15+db9 this should be both vga+ega compatible card. the tseng card looks nice

Looks the pictures, they are nice

Which is the more powerful video card ? i suppose its the tseng

These are very old VGA cards, none will be particularly powerful. They are all good matches for 286 or early 386 systems.

They differ in three characteristics:
- how old they are
- how much RAM they have (and potentially what you could upgrade them to)
- the actual VGA controller chip.

The Tseng ET3000AX is the oldest of the three, dating to mid 1989 (look at production dates on the chips, the youngest is 8926, so week 26 of 1989). It currently has 256kB of RAM on it, but can clearly be upgraded to 512kB - but no more, as the higher density chips would require bigger sockets. The RAM is capable of being run slightly faster than on the other two (70ns vs 80ns), but I don't know if the ET3000AX could/would take advantage of that.

The ATi VGA Wonder is a bit over a year younger, dating to at least week 31 of 1990. It uses higher density 1Mb RAM chips and has been upgraded to 512kB total. No room for any more though.

Finally the Oak card (the FCC ID starting with "IDW" shows Oak made this one themselves) is from early 1991, has an OTI067 controller, uses 1Mb RAM chips with 256kB currently installed and space for another 256kB.

In general, Oak chips are considered slow, but most of that reputation is due to the older OTI037 controller. The OTI067 is actually quite decent for an ISA VGA chip and definitely the most modern of this lot. I'd expect this card to be fastest, but as always, if you have the hardware, test it yourself with your own software to be sure in your situation. To get SVGA out of it you'd need to upgrade it to 512kB. The obvious source for that would be the ATi VGA Wonder, as it uses the same RAM chips.

dionb wrote on 2025-10-05, 11:08:

21-85kHz? That would be unusual for an EGA monitor, as 21.85kHz is EGA hi-res mode, but a lot of software uses low-res mode at 1 […]
Show full quote

renejr902 wrote on 2025-10-05, 01:47:

[...]

Wow! You know so much things, i'm always impress by your answers. Thanks so much. I will check again where i found this info about mt-32 compatibility and let you know.

I tried a ati small wonder cga isa card and the nec multi sync plus, show me a screen that is gamble, when like a use a ega card on my cga monitor. But the nec multi sync plus have some switch setting at back i will play with them. i checked in the nec manual and it says that monitor sync to 21kz to 85hz. cga sync at 15khz, but i dont know if its important that the nec monitor dont sync at 15khz

21-85kHz? That would be unusual for an EGA monitor, as 21.85kHz is EGA hi-res mode, but a lot of software uses low-res mode at 15.7kHz (same as CGA) so would not display on a monitor unable to support it. Do you have the exact model number (NEC made a lot of "Multisync Plus" branded monitors) or a pic of the back of it?

i just add a few pictures of rares cards i just got. look at the strange R.O.C sound card, that use a vibra16s and a real yamaha opl3 and no mention of creative or sound blaster anywhere. i will try a sound blazter 15 driver, if it doesnt work i will use any sound.

Creative sold Vibra chips to basically anyone who wanted them. This looks like a very basic implementation of one. It says it's "Magic S32", which is an Acer card.

As with the Aztech card, this is a PnP card but otherwise a full hardware Sound Blaster. It does not need any drivers under DOS, it just needs PnP initialization. Unisound would work for this one too, otherwise the usual (irritating) Creative PnP tools. If you're running an OS that does use drivers, specify which.

the 3 others cards are dual cards with db15+db9 this should be both vga+ega compatible card. the tseng card looks nice

Looks the pictures, they are nice

Which is the more powerful video card ? i suppose its the tseng

These are very old VGA cards, none will be particularly powerful. They are all good matches for 286 or early 386 systems.

They differ in three characteristics:
- how old they are
- how much RAM they have (and potentially what you could upgrade them to)
- the actual VGA controller chip.

The Tseng ET3000AX is the oldest of the three, dating to mid 1989 (look at production dates on the chips, the youngest is 8926, so week 26 of 1989). It currently has 256kB of RAM on it, but can clearly be upgraded to 512kB - but no more, as the higher density chips would require bigger sockets. The RAM is capable of being run slightly faster than on the other two (70ns vs 80ns), but I don't know if the ET3000AX could/would take advantage of that.

The ATi VGA Wonder is a bit over a year younger, dating to at least week 31 of 1990. It uses higher density 1Mb RAM chips and has been upgraded to 512kB total. No room for any more though.

Finally the Oak card (the FCC ID starting with "IDW" shows Oak made this one themselves) is from early 1991, has an OTI067 controller, uses 1Mb RAM chips with 256kB currently installed and space for another 256kB.

In general, Oak chips are considered slow, but most of that reputation is due to the older OTI037 controller. The OTI067 is actually quite decent for an ISA VGA chip and definitely the most modern of this lot. I'd expect this card to be fastest, but as always, if you have the hardware, test it yourself with your own software to be sure in your situation. To get SVGA out of it you'd need to upgrade it to 512kB. The obvious source for that would be the ATi VGA Wonder, as it uses the same RAM chips.

About the nec JC-1501VMoctober 1987
i posted the picture. i have the manual.

https://www.manualslib.com/manual/1593686/Nec … vma.html#manual

Let me know what you think.. if the monitor will do ega correctly and still do cga. the monitor has a 64 colors switch, i was not sure, so i put the switch in 16 colors position.

I will all vga in the next few hours. i will benchmark a little. I love oak oti067, i have it in other system and even a oti077 that i found powerful. So i will probably keep the oti067 vga+ega card in the system.
I'm curious this oti067 has a switch option for ega emulated or PURE ega. i will try it at pure ega. but im not sure about the difference. in the oti067 manual it said its better to put the switch correctly set with your nec monitor model, but my model is not shown, but i see Nec model ( generic one )

see the manual if you are curious:

http://www.funkygoods.com/schwarzschild/2014_ … vg_7000_man.pdf

or

Wanted BIOS for VG-7000 OTIVGA OTI067 card

see the picture of the 10 chips i bought on aliexpress, it supposed to work in all isa, pci video card fir upgrade ram. i will try them later. sorry the picture is hard to read for the chip number even with my own eye. but i got screeshot of the aliexpress page i bought them

About i will test them with unisound they don't work, some cards of the lot don't, i got a lot of cards, but many common cards

as always thanks a lot for your help and answers, its always appreciated

renejr902 wrote on Yesterday, 04:15:

[...] […]
Show full quote

[...]

About the nec JC-1501VMoctober 1987
i posted the picture. i have the manual.

https://www.manualslib.com/manual/1593686/Nec … vma.html#manual

Let me know what you think.. if the monitor will do ega correctly and still do cga. the monitor has a 64 colors switch, i was not sure, so i put the switch in 16 colors position.

Impressive monitor - but you're right: 21.8kHz minimum. So no hardware CGA input. If using TTL input (as you are), you need an EGA card (or in this case: VGA card with EGA output) with switches set to hi-res.

The standard EGA switch settings for hi-res are Off-On-On-Off.

That will make defauit output 21.8kHz - but what happens when you run low-res software depends on the card. If it outputs at 21.8kHz CGA modes will work fine, if it outputs low-res at 15.7kHz it won't on this monitor. It might be worth checking all three cards for behaviour in this case.

The switches on the monitor won't change this. Be sure to have the TTL/Analog switch set to TTL and apart from that set Manual to off. Then the other ones don't matter.

I will all vga in the next few hours. i will benchmark a little. I love oak oti067, i have it in other system and even a oti077 […]
Show full quote

I will all vga in the next few hours. i will benchmark a little. I love oak oti067, i have it in other system and even a oti077 that i found powerful. So i will probably keep the oti067 vga+ega card in the system.
I'm curious this oti067 has a switch option for ega emulated or PURE ega. i will try it at pure ega. but im not sure about the difference. in the oti067 manual it said its better to put the switch correctly set with your nec monitor model, but my model is not shown, but i see Nec model ( generic one )

see the manual if you are curious:

http://www.funkygoods.com/schwarzschild/2014_ … vg_7000_man.pdf

or

Wanted BIOS for VG-7000 OTIVGA OTI067 card

see the picture of the 10 chips i bought on aliexpress, it supposed to work in all isa, pci video card fir upgrade ram. i will try them later. sorry the picture is hard to read for the chip number even with my own eye. but i got screeshot of the aliexpress page i bought them

That is 40p SOJ memory. Your cards have DIP16 and DIP18 sockets. It will not physically fit. Also, those chips are EDO and your cards only support Fast Page.

Or at least: that's what the inscription says, but this photograph shows a chip that has clearly been re-labeled (memory like this was NOT still being made in week 18 of 2002) so what it actually is and what its specs are are anyone's guess. If it does what the inscription claims, it would be fine for 1995-era cards that need upgrading from 1MB to 2MB or 4MB. But it won't fit these older cards physically or work electrically.

For upgrading the memory on the Oak card you need 2 DIP18 chips with 256k x 4 FP DRAM capable of at least 80ns. For the ET3000AX you'd need 8 DIP16 chips with 64k x 4 ("464") DRAM, capable of 70ns if you want to match what's in there now.

dionb wrote on Yesterday, 06:37:

Impressive monitor - but you're right: 21.8kHz minimum. So no hardware CGA input. If using TTL input (as you are), you need an E […]
Show full quote

renejr902 wrote on Yesterday, 04:15:

[...] […]
Show full quote

[...]

About the nec JC-1501VMoctober 1987
i posted the picture. i have the manual.

https://www.manualslib.com/manual/1593686/Nec … vma.html#manual

Let me know what you think.. if the monitor will do ega correctly and still do cga. the monitor has a 64 colors switch, i was not sure, so i put the switch in 16 colors position.

Impressive monitor - but you're right: 21.8kHz minimum. So no hardware CGA input. If using TTL input (as you are), you need an EGA card (or in this case: VGA card with EGA output) with switches set to hi-res.

The standard EGA switch settings for hi-res are Off-On-On-Off.

That will make defauit output 21.8kHz - but what happens when you run low-res software depends on the card. If it outputs at 21.8kHz CGA modes will work fine, if it outputs low-res at 15.7kHz it won't on this monitor. It might be worth checking all three cards for behaviour in this case.

The switches on the monitor won't change this. Be sure to have the TTL/Analog switch set to TTL and apart from that set Manual to off. Then the other ones don't matter.

I will all vga in the next few hours. i will benchmark a little. I love oak oti067, i have it in other system and even a oti077 […]
Show full quote

I will all vga in the next few hours. i will benchmark a little. I love oak oti067, i have it in other system and even a oti077 that i found powerful. So i will probably keep the oti067 vga+ega card in the system.
I'm curious this oti067 has a switch option for ega emulated or PURE ega. i will try it at pure ega. but im not sure about the difference. in the oti067 manual it said its better to put the switch correctly set with your nec monitor model, but my model is not shown, but i see Nec model ( generic one )

see the manual if you are curious:

http://www.funkygoods.com/schwarzschild/2014_ … vg_7000_man.pdf

or

Wanted BIOS for VG-7000 OTIVGA OTI067 card

see the picture of the 10 chips i bought on aliexpress, it supposed to work in all isa, pci video card fir upgrade ram. i will try them later. sorry the picture is hard to read for the chip number even with my own eye. but i got screeshot of the aliexpress page i bought them

That is 40p SOJ memory. Your cards have DIP16 and DIP18 sockets. It will not physically fit. Also, those chips are EDO and your cards only support Fast Page.

Or at least: that's what the inscription says, but this photograph shows a chip that has clearly been re-labeled (memory like this was NOT still being made in week 18 of 2002) so what it actually is and what its specs are are anyone's guess. If it does what the inscription claims, it would be fine for 1995-era cards that need upgrading from 1MB to 2MB or 4MB. But it won't fit these older cards physically or work electrically.

For upgrading the memory on the Oak card you need 2 DIP18 chips with 256k x 4 FP DRAM capable of at least 80ns. For the ET3000AX you'd need 8 DIP16 chips with 64k x 4 ("464") DRAM, capable of 70ns if you want to match what's in there now.

Thanks a lot for these info. within 24h i should post again and tell you the result of the different cards with ega. i will buy the good ram chip dip18 and dip16 too.