So, I bought myself a pile of "new in box industrial cards" this week. Arrived today, exactly as pictured in the ad, just with one extra card outside of a box:
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I started unpacking them, leaving the motherboard for last. And had a bit of an anticlimax 🙁
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No PCMCIA NIC and - much worse - no motherboard 🙁 🙁
However some nice surprises in the rest:
- The second sound card looks like the least crap ALS100 card I've come across - thick PCB, solid caps and a sensible-looking layout. Also LS-212 OPL3 1:1 clone.
- The IDE card has a BIOS, which is unusual for AT IDE, and supports not two but four floppy drives. Not sure how I would use that, but nice nonetheless.
- That extra card was a NOS Adaptec AHA-1542 - about the most standard, usable ISA SCSI card out there 😀
- I'd expected the true 'industrial' cards all to be data acquisition cards. One of them is (full of NEC D71055 parallel I/O chips), the other three (two in the big box!) are all battery-backed RAM disks.
Of course "battery backed" means nasty leaky NiCd, but fortunately there was only some frosting around the negative poll. Snipped them off before they could do any harm. Whats left is a 128kB SRAM board, configurable as floppy drive, and a 1024kB EPROM board (or 192kB SRAM, depending on whether you use 16 27512 EPROMs or 6 62256 SRAMs) which is bootable as option ROM. Nothing that an XT-IDE couldn't already do, but nice nonetheless. It also contains detailed instructions on how to install DOS onto the ROMs and a bunch of tools:
MAKEDISK.EXE - that makes ROM images out of a list of files.
RAMDRV.SYS - SRAM device driver for DOS
INITRAM.EX - format utility for the SRAM disk
Not at all sure what I'll be doing with this stuff, but will definitely be ordering some chips to try it out.
Oh, and bottom-right another parcel arrived: a Deschutes P2-400 and a Katmai P3-600, the fastest 100MHz FSB Katmai CPU. My MS-6168 utterly refuses any Coppermine CPUs (even though its dying twin from same revision happily accepts CuMine and even Tualatin), so might as well give it the fastest CPU it will allow.
The Tyan box wasn't empty though. Apart from some crap coax cables (TV/radio style) that went straight into the bin, and the Tyan S1590 manual and driver disk, it also had some reciepts from 1996 (3 years older than the box!) and a pile of prints of IBM 486 pinout & specification:
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In 1996 in NL 256k of cache cost DFL 90 (about EUR 62 allowing for inflation), an IBM DX4-100 cost DFL 179 (EUR 125 now) and its motherboard DFL 269 (EUR 185 now). Will see if those IBM 486 specs are easily available online, if not will scan & preserve of course 😉
Edit: yep, found 10x 62256 SRAMs surprisingly cheaply and 16x 29C512 EEPROMs (for more flexibility if I want to re-use in 486 motherboards later) somewhat less so.
Edit2: found the IBM pinout document too: http://datasheets.chipdb.org/IBM/x86/486/40024.PDF - so no need to scan my papers.