This is cable for connection Czech disc drive Didaktik40 or Didaktik80 (signed as D40 / D80) to any ZX compatible computer. It's easy ZX-BUS booster + long cable with next connector for D40/D80 FDD. Some this cables exist with different length (more than 45cm) but adress lines A0-A7 are not boosted and signals are at end of cable unstable.Сообщение от newart
В Didaktik M - для этого в шлейфе были установлены буфера.
I have in Eagle designed new D40/D80 cable with correct ZX-BUS booster. Vertical position and through ZX-BUS.
Old cables are replaced with one IDE cable (80 lines ideally)
---------- Post added at 13:19 ---------- Previous post was at 13:02 ----------
TR-DOS on +3/+2A/+2B computers can work, but BDI must detect actual state of ports 7FFD and 1FFD. +3 can use allram mode = in this time +3 ignore external signals ROMOE1/ROMOE2 and BDI can't use reading from external rom/ram.
Years ago I designed a project "NEW BDI" based on CPLD XILINX, flash eprom, sram. But part with WDx793 controller is uncomplette (absent). I can finish this project in short time. Please wait....
My PROFI INTERFACE is internal memory upgrade for ZX128+2, and contain TR-DOS/DIVIDE/MB02 support and more next features.... Actually I use TRDOS with ramdisc support in 1MB memory (Pentagon 1024 and ZX PROFI 1024 ram modes).
http://www.youtube.com/watch?v=gQN6IshS5Gg
I will finish my old project.... 3 ... 2 ... 1 ...
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