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Would anyone happen to have an old Arrick Quick Switch from the early 80s in their junk bin? They had card edge connectors for the TRS80 I and III. We made a few thousand. Several hundred were hand nibbled and hand-lettered by me early on. Lots were sold here in the DFW area through computer...

Would anyone happen to have an old Arrick Quick Switch from the 80s in their junk bin? They had card edge connectors to match TRS80 I and III. We made a few thousand. Several hundred were hand nibbled and hand-lettered by me early on. Lots were sold here in the DFW area through computer stores.

I need the 40-pin DIP chip labeled 70200 in this Televideo 910. Anyone have an extra or know where to get one? Or know anything about it?

I'm looking for an IBEX dual 8" floppy drive box to restore my system to completion. Ibex was a CPM machine back in the early 80s. -Roger in TX

Has someone written a BIOSGEN where we enter the various hardware and port addresses, UARTs, FDC, etc to build a custom BIOS for CP/M? That should be do-able. Could create .ASM or even assembled code to do a SYSGEN.

Does anyone know what these 2 boards are in my SMS 11x machine? Kaiser & Damm, MOT 11 D1 with ribbon cable to DB25 on back, has RAM and ROM, 6809, ROMs. CALMOT '83 Kaiser & Damm, MM07 (memory management?) 11.Aug.83 This system has a M8186 KDF11-A CPU board, 8 serial ports, SMS FDC/HD...

Help, I have an SMS 11X PDP11 system. Restored the hardware to the best of my ability. It has an 8" HD that wont boot but the 8" FD will boot diagnostics. I've tried a bunch of other "RT11" RX01 disks (SSSD) and it just halts. What I need is tech info on this system because it has some special...

I'm building a product preservation site for Percom Data in Garland. They made Cassette and disk drive products. I'm looking for one of Percom's first products which was an S100 bus board with a UART and cassette interface circuit. Around 1976. Here's my website, please contact me if you have...

I'm doing a preservation project for Percom (1976-1983) and am looking for a Percom CI-812 Cassette Interface S100 board. Or the CI-810 board which is a 44-pin card edge board.

I'm doing a preservation project for Percom Data from Garland TX (1978-1984) and am looking for samples of products, user manuals, software disks. These include: Various disk systems for TRS80, SS50, Atari, IBM, Apple, LFD-400 Separator board for TRS80 Doubler board for TRS80 Electric Crayon...

I'm trying to restore several pdp11 machines to boot from floppy (H11, SMS11x, MF11) and all fail booting, so I want to confirm my disks are readable, so I'm searching for a utility to read RT11 disks on a standard CPM SSSD 8" drive system. Anyone have a CPM utility to read SSSD RT11 (RX01) disks?

WTB Intellec MDS series II keyboard to make my system complete.

Looking for a GIMIX SS50 system to restore and preserve PM me. Roger in Texas

I'm trying to get a Panasonic JU-455-7 5.25 floppy drive to work on an AMPRO Z80 Littleboard. The Littleboard works with both DS and SS drives, so minimal unknowns here. The JU455 works as a single sided drive but not as double sided. I've got 2 of them and they act the same way, so I don't...

Does anyone have a working Altos 8000, the old kind with white face, single user that has the 8100 PCB and the 1791 DD dual drive system? I'm restoring one and have am able to get a % prompt, and the drive seeks, but it doesn't appear to read any disk I create with my IMD system. It would help...

Has anyone seen any documentation for putting a standard SSSD 8" drive on an AMPRO Z80 Littleboard?

I'm looking for an AMPRO littleboard CPM 5.25" SINGLE SIDED disk image. I have the doublesided image on a working system, but this hardware has 2 SS drives. If anyone has the actual floppy I can make the image.

My understanding is that there are some CPMUG #5 diskettes out in the wild that possibly have erased PIP.PLM source code that would contribute to CP/M historic archives. I have an old CPMUG #5 diskette in a batch of disks bought on ebay a few years ago. Here is a .img of that disk if anyone...

In search of Altos ACS 8000 8" disk images for MP/M and Theos. If you have the diskettes, I can make images.

Doing some asm app dev using SIMH and the altairz80 and CPM2 emulators on an I7 windows PC. My software does constant display and runs too fast. I've tried setting throttling to 1% and 1K but lines still fly off the screen. Would prefer to avoid software delay loops. In the documentation...