Scans of the diagrams for the Z80 system used to run system14 on
Scans of the diagrams for the Z80 system used to run system14 on.
This is what I have been able to scan from the old pencil drawings.
These are huge, try viewing with 'xv -nolimits z80-cpu1.jpg' for example.
Use 'right mouse, save link target as', viewing in a web browser may present problems.
CPU card:
diagram part 1, processor and memory
diagram part 2, DMA and AT keyboard interface
diagram part 3, CTC
diagram part 4, component layout
Floppy disk controller card:
diagram part 1
diagram part 2
component layout
io mapping
some pulses
more pulses
VDU card:
diagram part1
diagram part2
component layout
IO card:
PIO SIO and +12 -12 V supply for RS232
RS232 interface
CTC settings for baudrate
External connectors
component layout 2
component layout 1
eprom programmer interface and Vpp supply
eprom programmer interface connector
Ramdisk card:
diagram part 1
diagram part 2
component layout
timing waveforms
Sound card:
diagram
component layout
Baycom packet radio modem card:
diagram
connect
component layout
connection to PC
connection to 27 MHz set
Backplane:
backplane for all cards (there were 2)