Z80 Trainer by smbaker
4 layer board (185mm x 204mm)
Z80 CPU running at 7.372Mhz, 512Kb RAM and 512Kb ROM.
4×5 matrix keyboard (PCB made for Cherry switches, but I used cheap 2 leads ebay switches),
Onboard 5V regulator (This will get very hot with TIL311s!)
Single stepper (upper switch top right corner)
Reset switch (below single step switch top right corner)
External rc2014 bus (Since this runs RomWBW its should be possible to connect external storage?)
CTC for programmable timer and baud rate.
PIO for parallel port (26pin SV5 left on PCB)
SIO/2 = 2x serial ports (2 x 10pin). Standard baudrate is 115200.
Display: Optional TIL311s or LCD 1602.
Runs RomWBW v2.8.0. I run a precompiled rom. Seems to be based on RC2014?
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The board with TIL311's (I had only 4 pcs at hand - they are expensive) Its not completed but it seems to work at basic functions. I have played with some simple code for getting keyboard to interact with MBASIC | ![]() |
Here with 1602 LCD and better photo: | ![]() |
Boot screen RomWBW Serial 115200 | ![]() |