Started by litwr, 11:33, 17 February 19
0 Members and 1 Guest are viewing this topic.
Quote from: GUNHED on 13:14, 18 February 19It has an advanced CPU (look at the PCB), IIRC it's some kind of custom Z80 (I hope not to mix things up though). The Z280 was buggy (a little bit) and the Z380 was different again.I prefer the Z80 itself, because it provides all opcodes. The Z180 f.e. does miss some of the important non-documented (8 bit parts of IX and IY f.e.).If the PcW16 would have a color screen, it would have been very successful. It's OS is really great, better than apple imho.
Quote from: JonB on 18:30, 18 February 19I have one, too.Its Z80 is not a discrete device, it is incorporated into one of the custom chips (the ASIC?). In use it is pretty sluggish and the "cabinet" (a flash memory used to store files) is small. The floppy drive is 1.44 MB but seems to have been intended as a backup drive only. There is a CP/M Plus implementation for it (John Elliot wrote it) which is nice, but it runs as an emulation under the PCW16's OS and has to do lots of page switching to work at all (according to JE). So as a result it isn't much faster (subjectively) than a PCW. Impressive achievement, though.
Quote from: litwr on 22:25, 18 February 19It is a bit odd that there is no direct way to run CP/M on the Z80-based system. I can't even imagine what prevents just to boot CP/M.
Z-80 Address S-IO Address Comment 00-07 000-007 Nothing selected 08-0F 1F0-1F7 IDE CS0 10-17 200-207 Games port at 201 18-1F 3F0-3F7 FDC and IDE CS1 20-27 3E8-3EF Serial Port 2 (IRQ3) 28-2F 3F8-3FF Serial Port 1 (IRQ4) 30-37 368-36F Nothing selected 38-3F 378-37F Parallel Printer 378-37A
Quote from: JohnElliott on 00:33, 19 February 19It would have meant I'd have had to write a hardware-level driver for the floppy controller, rather than just call the Rosanne functions.If anyone wants to do their own port (or go one better, implement virtual consoles and bring up MP/M) feel free
Page created in 0.109 seconds with 40 queries.