jchapman@watcgl.UUCP (john chapman) (05/13/85)
S100 - IEEE/696 boards for sale Tarbell double density disk controller - up to 1.2 mbytes (formatted) per drive - data transfer can be either DMA or PIO (programmed I/O, i.e. you read the data from a port a byte at a time) - full IEEE/696 compliance - controls up to four drives - CPM and/or BIOS available from manufacturer - can provide MS-DOS device driver listing (or source file if you send disk) on request - currently selling for $419.00 (see Byte) Lomas ram board - populated with 256k of 150ns rams - 8/16 bit transfers, full 24 bit addressing - requires 1.5 amps @ +5 - on board parity generation and error detection - uses Intel 8203 LSI ram controller - may be configured to accept phantom - all ram chips fully socketed - was $395.00 last Aug (see Byte for more specs) Asking $300.00 for each of the above, or $500 for both; I'll pay for 1st class airmail. Also TDL Z80 S100 cpu with 2mhz -> 4mhz continuously adjustable clock. Asking $50.00 . All the above prices are in U.S. dollars. I am open to (reasonable) offers on the above boards. for more information: John Chapman Computing Science Dept. University of Waterloo Waterloo, Ontario N2L 3G1 or John Chapman RR 4 Mount Forest, Ontario N0G 2L0 or ....!watmath!watcgl!jchapman or (519) 323-4977 (>7pm EST weekdays, all day Sat&Sun)