Appendix C
Specifications
Main Unit
8-bit CPU
Main. memory
Math coprocessor
Interfaces
Parallel interface
Serial interface
Speaker interface
Option slots
Keyboard
Layout
Function keys
8088-1 microprocessor; 4.77MHz or
9.54MHz clock rate; keyboard selectable
512 KB; expandable to 640 KB
8087-1 microprocessor (optional)-for
use at 4.77M/9.54Hz
8087-2 microprocessor (optional)--for
use at 4.77MHz only
Standard 8-bit parallel, 25-pin, D-shell
female
25-pin, D-shell male
Internal, non-adjustable
Five IBM PC-compatible, 8-bit, input-
output expansion slots (one used by
video card; one used by hard disk con-
troller card, if a hard disk is installed)
Detachable, two positions, 84 sculpted
keys
56-key QWERTY main keyboard, 18-
key numeric/cursor pad, 10 function
keys (user-definable); LEDs for lock
keys
Three levels (normal/shift/alternate);
user-definable
Specifications C-1
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