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Couch to 64k – a.k.a. Building a Z80 Breadboard Computer. Part 1: Pins
A lot of people build Z80 based computers. They build something with some flashing LEDs, some buttons, and maybe even a serial port. But the computers I loved as a kid had high-resolution displays,...
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Couch to 64k Part 2: Adding ROM to Our Breadboard Z80 Computer
In part one of this series we explored the Z80 processor and found out what various pins do. And we explored a few of the Z80s opcodes by manually feeding them into the data pins. The circuit we built...
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Couch to 64k Part 3: Adding a Character LCD Display to our Z80 Breadboard...
In the previous part of this series we attached a ROM chip to our Z80 so we can run programs. But running programs is of little use unless our computer has some way to communicate with the outside...
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Couch To 64k Part 4: Adding a Keypad/Keyboard to our Z80 Breadboard Computer
In the previous part of this series we added a character LCD display to our breadboard computer. We discussed how input, output and address decoding works on the Z80, which means we know most of what...
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Couch to 64k Part 5: Adding RAM and a CP/M Compatible Memory Architecture to...
If you've been following this series so far then you'll have a basic Z80 based computer with ROM, an LCD display and a keypad or keyboard. What we don't have yet is any way store store data. We need...
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