Again Z80 project: single board computer

A project log for Retro DIY computer project

Previously I made 4-bit CPU, and I would like to follow the progress of human being.

kodera2tkodera2t 12/29/2015 at 01:173 Comments

Previously I made (or just wiring?) Z80 computer consisting of AKI-80 (TMPZ84C015 based board controller) and LPC810 video console. This time I combined these two board just in one!

Actually Toshiba TMPZ84C015 is already obsolete and I got this chip by de-soldering on AKI-80 (I got four additional dead-stocks of AKI-80 so one of them is sacrificed (or re-born as this computer)). You will see TMPZ84C015 and EPROM and may wonder where is SRAM (main memory), actually is is below EEPROM using surface mount chip.

Indeed operation is exactly the same. but configuration is simpler than before. As you see, battery is enough to drive this self-consisting computer. I am not sure someone will try this computer but already uploaded Eagle files at github. My PCB pattern has several jumpers and please find it and not forget to connect them, if trying... Actual operation can be found in the following movie... have fun!


xor.banane wrote 11/01/2017 at 12:02 point

Je voudrais avoir les plans de votre circuit s'il vous plaît et serait-il possible d'ajouter un port USB?

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etdaron wrote 06/19/2017 at 18:59 point

Fiquei fascinado pela capacidade dessa placa mãe Z80. Fico aqui sonhando em incrementar: leitor FDD, leitor SDCart, Out VGA, games e util ! Você está de parabéns !!!

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etdaron wrote 06/19/2017 at 18:59 point

Cheguei até aqui, ao pesquisar por menor placa-mãe com Z80 CPU onde pode-se usar um teclado comum e leitor de disket FDD. Na verdade, eu tenho um ZX Spectrum e penso como adaptar um leitor disket FDD para melhor comodidade ! Obrigado por ver sua ideia em prática !

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