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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
(c) 1984 Logitek (Germany)
Allows to connect and use Commodore 1541 disk drive.
Components: Z8420 PIO, 8K ROM, 256x4 PROM, NMI button.
Allows to connect and use Commodore 1541 disk drive.
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:
- 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.
Notes / TODOs:
- 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.
- 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,
Q1 - ROM A11, Q2 - ROM A10, Q3 - ROM /CE, Q4 - /ROMCS
- 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,
Q1 - ROM A11, Q2 - ROM A10, Q3 - ROM /CE, Q4 - /ROMCS
*********************************************************************/