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MetalliC 2020-07-12 23:04:13 +03:00
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src/devices/bus/spectrum/logitek.cpp
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Proceed 1 - Commodore IEC Bus and printer interface Proceed 1 - Commodore IEC Bus and printer interface
(c) 1984 Logitek (Germany) (c) 1984 Logitek (Germany)
Allows to connect and use Commodore 1541 disk drive. Allows to connect and use Commodore 1541 disk drive.
Components: Z8420 PIO, 8K ROM, 256x4 PROM, NMI button. Components: Z8420 PIO, 8K ROM, 256x4 PROM, NMI button.
Photos and manual https://k1.spdns.de/Vintage/Sinclair/82/Peripherals/Disc%20Interfaces/Logitek%20Proceed%201%20C64%20Disc%20Interface/ Photos and manual https://k1.spdns.de/Vintage/Sinclair/82/Peripherals/Disc%20Interfaces/Logitek%20Proceed%201%20C64%20Disc%20Interface/
Notes / TODOs: Notes / TODOs:
- floppy drive access doesn't works with "Device timeout" error message. - floppy drive access doesn't works with "Device timeout" error message.
cause is not known, possible due to not correct IEC hookup or some Z80PIO emulation bugs. cause is not known, possible due to not correct IEC hookup or some Z80PIO emulation bugs.
- ROM paging performed by undumped PROM, current logic might be incorrect or innacurate. - ROM paging performed by undumped PROM, current logic might be incorrect or innacurate.
wiring: A0-A5 - Z80 A8-A13, A6 - PIO PB7, A7 - nc, /CE1 - A14, /CE2 - A15, wiring: A0-A5 - Z80 A8-A13, A6 - PIO PB7, A7 - nc, /CE1 - A14, /CE2 - A15,
Q1 - ROM A11, Q2 - ROM A10, Q3 - ROM /CE, Q4 - /ROMCS Q1 - ROM A11, Q2 - ROM A10, Q3 - ROM /CE, Q4 - /ROMCS
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