MCCLUSKEY@JPL-VLSI.ARPA (08/30/84)
From: John McCluskey <MCCLUSKEY@JPL-VLSI.ARPA>
<gobble>
For Sale to a good Home. $475 ?
Big Board II, Z80 single board computer.
Featuring:
A Z-80B CPU running at 4 Mhz (can be boosted to 5 or 6 MHz).
SASI Hard Disk Interface with BIOS Source for a hard disk.
STD Bus port for expansion.
1793 Single/Double Density Floppy controller for 8" or 5" disks.
Z-80B DART twin RS-232 ports.
Z-80 DMA for lightning fast disk transfers.
Parallel keyboard input.
Two 8 bit output ports, two 8 bit input ports for user I/O.
Two Z-80B CTC's for baud rate generation and general timer use.
24 X 80 Video Generator with 7 X 9 pixel Characters emulating an ADM-31.
64 Kbytes of dynamic RAM.
6 sockets for 2732 EPROMS (Monitor EPROM included).
Built in EPROM Programmer for 2716's and 2732's, with software!
Including:
Schematics, theory of operation, and monitor EPROM documentation.
Monitor EPROM & BIOS Source code on 8" single density floppy.
Games and EPROM programming software on 8" single density floppy.
This board with an 8 inch single sided double density disk drive (about $100),
makes a very nice CPM 2.2 system. Using 1K sectors, an 8" floppy will hold
720 Kbytes per side (flippy disk).
------