12 Aug
2005
12 Aug
'05
5:10 p.m.
On Thu, 11 Aug 2005, Tony Duell wrote:
Right. I've not traced out the schematic (to get the wiring of the 26 pin
cable), and don't intend doing so anytime soon, but it's hardly going to
overtax me if I need to use it...
Wildport Ltd 6522 VIA card. Contains a 6522
(Duh..) and a '04 only. Has a
lenght of 26 way ribbon cable connected by a permanent transition
connector, other end unterminated. Probably a user I/O card.
Standard 6522 interface. The 04 is to invert one of the Apple's clock
signals to be compatible with the 6522. Apple/PC link
interface. 2716 EPROM + TTL + buffers + M58725 (?). One 20
pin header near back of card. No idea!
I think this is a card by Applied Engineering? Maybe not. But I think it
allows connection to a PC-compatible disk drive(?) 2 off Communication Board. These aapear to the
board Sellam was
mentioning. 6850 + TTL + P2 PROM + 8304.
Somewhat rare. At least they were hard to come by when I was looking for another to complete the TelePong demo several years
back. I finally got
a second one through the designer of the card.
Yes, I think I have one of their S100 boards somewhere, but it would take
some finding....
-tony
Heuristics 20A-1. TTL + 2 quad op-amps + 2 quad
comparators + 2708. 3.5mm
jcak socket. I think this might be a speech input card...
Most likely. Heuristics made speech recognition stuff in the late 1970s
and early 1980s. I have a Heuristics speech recognition board (large,
mounted in a hard-shell portable carrying case) with a serial port so it
can be interfaced to any computer with an RS232 port. Circa early 1980s.