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RE: [N8VEM-S100:474] S-100 8086 CPU board ordered (finally!)
That's great Andrew. That board has been our longest running prototype board
When the board arrives I will put together a board quickly and post "my
Most of the board uses common 74LSxx or 74Sxx chips however for the Intel
chips could I suggest you order the CMOS chips.
The original NMOS Intel chips run real hot and cannot really get to high
Suggest 80C86 if you can find them or at least an 8086-2 (8MZ chip). Best
of all is the NEC V30 CPU. Runs stone cold I think up to 12+Mhz.
The Bus controller also should be an 80C88-2 and the clock generator an
80C84A The latter two chips I got from Unicorn
From: n8vem...@googlegroups.com [mailto:n8vem...@googlegroups.com] On
Behalf Of lynchaj
Sent: Saturday, November 12, 2011 7:23 AM
Subject: [N8VEM-S100:474] S-100 8086 CPU board ordered (finally!)
I ordered a batch of the S-100 8086 CPU boards. They should be here in
about three weeks or so (late Nov or early Dec). There are enough boards
for everyone who has asked for one plus a few extras for those who arrive
The good news is all the S-100 EPROM (EEPROM, FLASH, SRAM) board PCBs are
now gone to their builders. Thanks to everyone who contributed for the PCB
There are still plenty of the S-100 Serial IO board and S-100 buffered
prototyping board PCBs left. However even those are starting to come down
to more manageable levels. There are 19 of the S-100 buffered prototyping
board PCBs left and 29 of the S-100 Serial IO board PCBs left.
John and I are working on the S-100 PC-AT board (also known as the MS- DOS
support board) which provides much of the ancillary circuitry of a PC-AT
motherboard but without the RAM or CPU. John should be building and testing
the first prototype board in the next few days. Also the we've ordered an
S-100 VGA prototype board which should be here soon.
Neil, Rich, and John are also working on the S-100 68K CPU board.
John added a bunch of circuitry to support multiple CPU masters on the
S-100 bus. Look for an updated S-100 68K CPU board soon.
Thanks and have a nice day!