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Would make sense I guess:

MK3801N
Priority Interrupt Controller - Serial Interrupt Cntlr
Micro Processor Family=Z80

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Mostek MK3801 Serial Timer Interrupt Controller (Z80-STI) emulation

src/emu/machine/z80sti.c by yours truly smile

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Actually it says: "MOSTEK[encircled C]8424, MK3887N-4"

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MK3887-N: Z80 Serial I/O Controller.

Datasheets are a bit hard to find but it's probably the same chip as the Z8440

-Darkstar

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I can type down the labels for all socketed ROMs if that helps. Or any other chip that looks interesting

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More details:

Mainboard (pictures P1010036 & P1010038)
*28-pin: D27128, L4267096S,...(occluded by sticker: "965268 1")
*40-pin: TMS9937NL, DB 336, ENGLAND
*40-pin: P8085AH-2, F4265030, C INTEL '80 (there are 2 of these)
*28-pin: JAPAN 8442, 00009SS0, HN4827128G-25 (sticker: "962107")
*22-pin: ER3400, GI 8401HHA
*The MOSTEK already mentioned
*20-pin: (sticker: "961420 0")
*24-pin: D2716, L3263271, INTEL '77 (sticker: "962058 1")
*3 tiny 16-pins which look socketed

FD/HD Interface Board (pictures P1010031 & P1010033)
*28-pin: TMS, 2764JL-25, GHP8414
*40-pin: MC68802P, R1H 8340
*40-pin: WDC '79, FD1797PL-02, 8342 16
*14-pin: MC4024P, MG 8341

The other socketed chip I mentioned sits on a third board referred to as Hard Disk Controller

Apart from this there's 1 diskette drive; 1 hard disk subsystem consisting of Hard Disk Drive, Hard Disk Controller board and Power Converter board; 1 Power Supply Board. There are unoccupied spaces for Cluster Connector board, Optional boards and Motherboard for Optional boards.

Probably a lot of redundant information here but posting it just in case.

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Huh. A CP/M system with dual 8085s and TMS9937 video? That's different smile

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While we're on the topic of free stuff in Sweden, would there be any interest in a Luxor ABC "Slutprov" testing equipment?

I've had this in storage for quite the many years and I've got to say, I'm not even sure what it was used for exactly. Google didn't help much either.

As far as I know it's some kind of testing equipment used by Luxor for the final part of the production-line of some, or all, models of the ABC computer. It seems to be at least a somewhat advanced piece of equipment, but so far I can't really give any detailed info on what kind of stuff is in it since I can't get the bloody thing open. Whoever built it must be related to Houdini. smile

Anyway, I can't say I know if it works or not, nor even if it's of use within MESS' spectrum, but even if it turns out to be of no use for the project I guess it'd be a cool addition to someone's ABC collection. It's probably a very rare piece of computer curio so I'd rather see it put to use than scrapped.

I'll get back with pictures and more information tomorrow.

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Originally Posted by FatArnold
While we're on the topic of free stuff in Sweden...


Sounds like it's time to clean up the attic wink

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Originally Posted by FatArnold
would there be any interest in a Luxor ABC "Slutprov" testing equipment?


I'm super interested if it has a CPU and some ROMs smile

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