-5v was only used for ISA.
Not just slots though. Sometimes integrated chips (Like onboard sound) are on the ISA bus.
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PCBONEZ wrote:

-5v was only used for ISA.
Not just slots though. Sometimes integrated chips (Like onboard sound) are on the ISA bus.

Yeah,but this one doesn't have audio onboard.

I'm a bit worried about the SB16 though. Does its OPL run from -5V?

AFAIK not many ISA boards ever needed the -5V line, most sound cards used the -12V for the amplifier. SB16 should be fine.

alexanrs wrote:

AFAIK not many ISA boards ever needed the -5V line, most sound cards used the -12V for the amplifier. SB16 should be fine.

I have no idea if SB16 used -5v but I do recall that the onboard sound on some motherboards won't work without -5v so some sound chips do use it..
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ISA pinout http://pinouts.ru/Slots/isa_pinout.shtml
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The reason -5v disappeared from PSUs is that ISA disappeared from motherboards.
.

Okay,here is a picture of the board and the BIOS. That's all the pics I have for now.
If anyone wants more pics feel free to ask.

Nice system but Slot 1 is my favourite era so I am biased 😀

Nothing wrong with using a DVD drive, although I don't really have any strong feelings for OOD's. CD/DVD's are a pain. I mostly its just used to install
Windows then I just copy everything over the network and crack all my games.

Video could do with an upgrade if you want to play windows games. You can go upto a Gforce 4 TI 4600 without any issues (although overkill for a slot 1 PC) or the currant S3 trio combined with a Voodoo 1 or 2 would be a nice setup as well.

SB16 is fine. It was one of the early Sound blasters that needed the -5v rail.

HDD seems a little on the small side. Even my P2 400 came with a 10GB drive back in 98 but if your not low on disk space then no big deal right 😀
What games you running on this?

chinny22 wrote:

Nice system but Slot 1 is my favourite era so I am biased 😀

Nothing wrong with using a DVD drive, although I don't really have any strong feelings for OOD's. CD/DVD's are a pain. I mostly its just used to install

I always liked using discs. 😀

chinny22 wrote:

Video could do with an upgrade if you want to play windows games. You can go upto a Gforce 4 TI 4600 without any issues (although overkill for a slot 1 PC) or the currant S3 trio combined with a Voodoo 1 or 2 would be a nice setup as well.

I've been thinking of going with either a TNT/TNT2 card or with a MX400 64MB (which sounds quite overkill)

chinny22 wrote:

SB16 is fine. It was one of the early Sound blasters that needed the -5v rail.

Okay then,it's good to use it.

chinny22 wrote:

HDD seems a little on the small side. Even my P2 400 came with a 10GB drive back in 98 but if your not low on disk space then no big deal right 😀
What games you running on this?

Well,space isn't a concern...yet.

As for games,I'll run:

Abe's Oddysee
Abe's Exoddus
NFS2
NFS3
NFS Porsche 2000
and maybe NFS Hot Pursuit 2,but for that I'd need something new like a GF4 or 5500.

PCBONEZ wrote:

I have no idea if SB16 used -5v but I do recall that the onboard sound on some motherboards won't work without -5v so some sound chips do use it..

Among the most common cards only the earliest 8-bit SoundBlasters, the LAPC-I and some PAS cards need the -5V rail. AFAIK later cards derive it from the -12V rail when needed (maybe the -12V line through a regulator doesn't need as much filtering to be relatively noise free?). It could be that some motherboard makers used the -5V line directly to reduce component count.

alexanrs wrote:

PCBONEZ wrote:

I have no idea if SB16 used -5v but I do recall that the onboard sound on some motherboards won't work without -5v so some sound chips do use it..

Among the most common cards only the earliest 8-bit SoundBlasters, the LAPC-I and some PAS cards need the -5V rail. AFAIK later cards derive it from the -12V rail when needed (maybe the -12V line through a regulator doesn't need as much filtering to be relatively noise free?). It could be that some motherboard makers used the -5V line directly to reduce component count.

So I guess it's a green light for my Sound Blaster 16 (CT2770).

I've also built a speaker (just two wires connected to a 3.5mm cable) to test it - still works,but the sound is very faint - of course,because there's no amplifier for the speaker.

PcBytes wrote:

And so,I've ventured back into Slot 1 zone. This is my current rig for said era of Slot 1 systems. […]
Show full quote

And so,I've ventured back into Slot 1 zone. This is my current rig for said era of Slot 1 systems.

Motherboard - Gigabyte GA-6BXC Rev 2.0
Video card - S3 Trio 3D/2X Onboard 8MB AGP 2x
PSU - Premier LC-B450E (see this thread) - might be a small problem since there isn't a -5v rail
HDD - WDC WD80EB-28CGH2 8GB
CPU - Pentium III 500MHz Katmai (SL35E)
ODD - Pioneer ATAPI Model DVD-117 DVD-ROM - sounds pretty good to me,what do you think?
Soundcard - Sound Blaster SB16 Value ISA
NIC - Realtek RTL8139 PCI
RAM - 224MB PC-100 SD-RAM (PC133 doesn't work and I had some good PC133 sticks 😢 )
OS - Windows ME

What problem did you have for your PC-133 memory modules?
Btw, I'd say for Windows ME 224MB should be enough 🤣 (I used 192MB in my Celeron 400 build with ME and it was enough).

As for graphics cards, that depends on what games you intend to play. I had a TNT in my old PII-350 and that one I found was actually a bit slow for some reason.

alexanrs wrote:

PCBONEZ wrote:

I have no idea if SB16 used -5v but I do recall that the onboard sound on some motherboards won't work without -5v so some sound chips do use it..

Among the most common cards only the earliest 8-bit SoundBlasters, the LAPC-I and some PAS cards need the -5V rail. AFAIK later cards derive it from the -12V rail when needed (maybe the -12V line through a regulator doesn't need as much filtering to be relatively noise free?). It could be that some motherboard makers used the -5V line directly to reduce component count.

Like I said - I don't have any idea about creative cards. I could not find any pinouts for their chips or cards to check anything.

The mobos where the integrated sound wouldn't work without -5v were socket 478 IIRC so the use of -5v for some sound chips wasn't limited to ancient 8-bit parts. Specifically there were several models of MSI boards where they were still using ISA based sound chips on-board after everyone else had moved on to PCI based OB sound.
The main reason I even remember is that back at the time I flamed MSI in a forum somewhere for using dated parts on (then) brand new models.
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PcBytes wrote:

So I guess it's a green light for my Sound Blaster 16 (CT2770).

Apparently yes.

PcBytes wrote:

Motherboard - Gigabyte GA-6BXC Rev 2.0
RAM - 224MB PC-100 SD-RAM (PC133 doesn't work and I had some good PC133 sticks 😢 )

PC133 Should work fine. This motherboard is very reliable and flexible, especially the final rev 2.0. It runs from 50MHz up to 133MHz FSB speeds. With CPU adapters and a modded BIOS it can take Tualatin and VIA C3 Processors over 1GHz.

gerwin wrote:

PcBytes wrote:

Motherboard - Gigabyte GA-6BXC Rev 2.0
RAM - 224MB PC-100 SD-RAM (PC133 doesn't work and I had some good PC133 sticks 😢 )

PC133 Should work fine. This motherboard is very reliable and flexible, especially the final rev 2.0. It runs from 50MHz up to 133MHz FSB speeds. With CPU adapters and a modded BIOS it can take Tualatin and VIA C3 Processors over 1GHz.

Either the PC133 sticks wouldn't get recognized st all or at half their capacity
It's a Rev 2.0 board. PC100 sticks work fine tho. (currently 2x128MB PC100)

The 133 MHz FSB setting results in no POST at all.

Might be a density thing. single sided 256mb pc133 modules are always trouble on Slot 1 machines while working fine on Socket 370 machines, while double sided 256mb pc133 modules work on everything.

ODwilly wrote:

Might be a density thing. single sided 256mb pc133 modules are always trouble on Slot 1 machines while working fine on Socket 370 machines, while double sided 256mb pc133 modules work on everything.

This does sound like a density issue indeed.

I just tried two double-sided PC133 sticks. No go,one shows as 128 MB (a 512MB Infineon stixk out of a HP) and the other one (256MB PQi) would give the no RAM beep. Both work fine on a Matsonic MS7177CT (ECS P6VXAT) motherboard with the VIA 694X chipset,and would report the correct amount of RAM.

512MB Sticks won't work on the i440BX. I succesfully used 128MB and 256MB (double sided) PC133 CL2 SDRAM on both my GA-6BXC rev 2.0 boards.

PcBytes wrote:

The 133 MHz FSB setting results in no POST at all.

Short answer: Probably because the CPU cannot handle this. Your 500 MHz Processor will be forced to run at 665MHz with that setting, thanks to intel locking the internal CPU multiplier at 5.0x.

Additional answer: VIA C3's, Engineering samples and Pentium IIs (PIIs from before august 1998 locking date) can make use of all FSB speeds by lowering their multiplier. Then there are Pentium III'EB' versions that are designed for the 133MHz FSB.
Another caveat is that the AGP bus will be overclocked (to 89MHz or even 133MHz), as is the case on any i440BX board running at 133MHz. Some AGP video cards won't like this. IIRC the 4th knob on the DIP-switch for the FSB speed controls the AGP divider: 1:1 versus 1:2/3. Keep this at 1:2/3.

I tried a 256MB double sided PC133 PQi (see my post above yours) and I just got the no RAM beeps. And the FSB was set to the old position,100MHz.