Re: Kontron IP LITE, power-supply pinout?

Posted on 2023-06-24, 02:19

by

by Per

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Is that one of the old Kontron that requires the EISA back plane ? I remember searching for info on one of the old similar Kontrons but their archived website gave little info. Yes, EISA backplane, with two main cards making up the meat of the system. The PSU should have connected with an edge- …

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Kontron IP LITE, power-supply pinout?

Posted on 2023-06-24, 00:28

by

by Per

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi I got a Kontron IP LITE, but it did not come with a power supply module. Does anyone know the pinout of the internal power supply connector on the backplane? I'd love to try getting this up and running.

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Re: AST Premmia GX - dual P90 socket 5 system

Posted on 2023-01-18, 23:45

by

by Per

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

My 2c on this matter: I just got one of these cards, and the riser in mine is a 202616-001. Unlike the risers referenced above, there's just empty slots on this one. In particular 2 PCI and 5 EISA slots. It looks like there might be room for a third PCI slot as well, but it's not soldered in.

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Re: Sad Socket 4 motherboard

Posted on 2020-12-28, 00:31

by

by Per

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Strange to see such damage so remote from the battery. Should be much worse near it. Or maybe something else was spilled between those ISA slots... It was an external 3.6v litium battery which was stored still connected, laying on top of the motherboard. I was not aware external batteries like that …

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Re: Sad Socket 4 motherboard

Posted on 2020-12-27, 21:39

by

by Per

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well, there was thick white battery goop all over the place between those two ISA slots. First priority was to get that nastiness off.

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Re: Sad Socket 4 motherboard

Posted on 2020-12-27, 21:27

by

by Per

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Update, found a few of the resistors in the waterlock of the sink. there's at least one 103 (10k), two 102 (1k) and one 330.

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Re: Sad Socket 4 motherboard

Posted on 2020-12-27, 17:26

by

by Per

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

it's just 411-6894-[]R[]. Nothing is written into the filled areas. The sticker in the middle says 17- 28746627. Edit, back side PCB trace layer says 316-6894-00001 R01. Made in 46th week of 1994.

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Re: Sad Socket 4 motherboard

Posted on 2020-12-27, 15:51

by

by Per

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

They were there, but the tin was crumbling. Really brittle stuff after corrosion. I didn't realize they were coming off untill most of them were gone.

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Sad Socket 4 motherboard

Posted on 2020-12-27, 15:21

by

by Per

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

In hinsight, I should have removed that battery years ago. On the other hand after a vinegar wash, solder mask held up allright, damages doesn't seem too bad, and looks quite fixable if I can get hold of the resistance values of the missing resistors. If anyone has a similar board, I would be really …

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Re: Looking for volunteers with XT / 286 systems with a co-processor

Posted on 2020-03-06, 20:23

by

by Per

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That's a very interesting setup. What is the purpose of that add-on, if it has any specific one? I looked it up on wikipedia ,something to do with Rev. D? The intention of the card is to add support for CP/M-86 applications and MS-DOS. The stock Tiki-100 without the card only has the Z80, and runs …

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Re: Looking for volunteers with XT / 286 systems with a co-processor

Posted on 2020-03-06, 18:40

by

by Per

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You've picked my curiosity, what kind of machine is that 8088/87? I only use 2 functions of int 21h for these test programs, all of them should work if COM executables are acceptable. It's the x86 add-on expansion board for the Tiki-100. It runs both the 8088 and 8087 at the same 4MHz base-clock as …

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Re: Looking for volunteers with XT / 286 systems with a co-processor

Posted on 2020-03-06, 15:16

by

by Per

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have the posibility of testing on an IBM 5162 with a 287XL, and an 8088/87 system that has DOS (int 2#h) but is otherwise not IBM compatible (missing any int 1xh and the entire chipset). I also got some 287 NPUs that are not XL, but seems like there's quite a few results from those already.

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Re: Transfering .dsk files to floppies (Tiki-100 CP/M)

Posted on 2020-03-04, 06:46

by

by Per

in Marvin \ Software

in Marvin \ Software

I've downloaded some of the disk files. They are ordinary raw disk dumps that rawread/rawrite, WinImage etc. uses as well. However, the disks have an unusual size of exactly 200 kb, which has no equivalent on a PC. That's why you can't use them. CP/M used many weird disk formats. In this case, they …

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LAPC-I control ROM versions

Posted on 2011-04-16, 23:01

by

by Per

in MT-32 General

in MT-32 General

How many versions are there of the controll ROM of the LAPC-I/CM-32L? I got a LAPC-I from around mid-1989 with version 1.00, and I have seen a dump of version 1.02, but I don't think that was the last one. The LAPC-I cards were initially shipped with the ROM socketed and labeled, in which case the …

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Re: Roland LAPC-I compatible with MPU-IPC-T interface?

Posted on 2011-04-16, 22:25

by

by Per

in MT-32 General

in MT-32 General

Here is the pinout of the two interfaces as of the connector on the card. You may need mirrot it if you want the cable's connector. Note that the output TxD (MIDI out) lines of the MPU-IPC-T has already been divided and buffered by the card while the TxD line from the LAPC-I has not, and therefore …

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Re: FM-chip audio card project

Posted on 2011-04-13, 09:20

by

by Per

in PC Emulation

in PC Emulation

An idea would then be to make a microcontroller emulating the OPL2, while also emulating the same pinout. Then it could be used with this card. The main reason why I want this card to be made is not because of the OPL2 compability, but because it also supports the 4-op OPM chip. Of course this will …

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Re: FM-chip audio card project

Posted on 2011-04-09, 08:38

by

by Per

in PC Emulation

in PC Emulation

We'd need to know though how many MIPS we need for everything After all it should be able to run Munt and a few others in parallel if we go through the trouble of making a board... The board has already been made, and it doesn't put up any requirements when it comes to system speed. This card don't …

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Re: FM-chip audio card project

Posted on 2011-04-08, 23:32

by

by Per

in PC Emulation

in PC Emulation

Most of the parts are regular TTL chips you can buy at your favorite electronics supplier (Jameco, etc..). The actual OPL2 and YM3412 can be a little more tricky to get, but it should generally be possible to get them for a decent price. With the OPL2 and the card set to a given address; it could be …

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Re: FM-chip audio card project

Posted on 2011-04-08, 14:43

by

by Per

in PC Emulation

in PC Emulation

"Builders" as in beta-testers. Since this is a prototype, the builders will buy a PCB, and then they will have to get the parts and build the card themselves. $30 may sound like quite a lot for just a PCB, but that's because it's a smaller run just to see if the card has any issues or not (like …

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FM-chip audio card project

Posted on 2011-04-08, 11:45

by

by Per

in PC Emulation

in PC Emulation

Some of us at the Vintage Computer forum has used some time to design an ISA board which will be able to provide OPL2 (AdLib) or OPM/OPP/OPZ/OPZII audio to the PC. At this point we have the prototype PCB designed, but we are in a general lack of builders. Similar OPL2-compatible boards are getting …

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