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builderpages:speed3ple:z80-trainer [2025/03/15 07:43] – Revision from 2025-03-15 builderpages:speed3ple:z80-trainer [2026/06/15 13:22] (current) – external edit 127.0.0.1
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 +/* Imported from Wayback Machine
 +   Original URL : https://retrobrewcomputers.org/doku.php?id=builderpages:speed3ple:z80-trainer
 +   Snapshot date: 2025-02-12
 +   Generator    : wayback-archiver
 +*/
 +
 +====== 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?
 +
 +^Text                                                                                                                                                                                                                            ^Images                                                                                                                                                                                                                                                                                     ^
 +|\\ 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|{{[[lib:plugins:ckgedit:fckeditor:userfiles:image:builderpages:speed3ple:images:img_20210307_203817small.jpg]]
 +|Here with 1602 LCD and better photo:                                                                                                                                                                                            |{{[[lib:plugins:ckgedit:fckeditor:userfiles:image:builderpages:speed3ple:images:img_20210313_112730small.jpg]]
 +|\\ Boot screen RomWBW\\ \\ Serial 115200                                                                                                                                                                                        |{{[[lib:plugins:ckgedit:fckeditor:userfiles:image:builderpages:speed3ple:images:img_20210305_195302small.jpg]]
 +
 +\\
  
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