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So far I've found that CDOS and CP/M differ with their Delete File result codes. CP/M returns 0xFF on error, CDOS 0x00. I'm not sure why CDOS changed that. CP/M programs must only use BDOS calls and not access the CP/M BIOS directly.

A big breakthrough for me today. I discovered the AltairZ80 simulator R.COM and W.COM programs written for CP/M appear to work on CDOS. I was using Xmodem to move files between the simulator and the host file system. With R.COM and W.COM, moving files is now fast and easy. I'm starting to like...

I enjoy trying to preserve as much of this software in its original form as I can. Software for the Dazzler has been quite a challenge to find. The Dazzler Games manual says it came with Magenta Martini. Was that provided on paper tape? FYI, I found a bug with the CDOS Xmodem 2.04 /TB flag...

Would anyone have a copy of the original Dazzler Games disk?

Thank you. I got it booting on AltairZ80 sim.

I ended up providing even/odd in the 0E register on a millisecond resolution. 0-25ms alternate even/odd and EOF at 26-29ms. It isn't accurate, but software looking at those bits will run rather than wait. AltairZ80 has peculiar timing, especially when wanting to throttle the CPU to a specific...

I'm new to the Dazzler, so anything you think would be helpful is appreciated. Thank you.

Amazing! I was just typing in Gotcha! because I couldn't find it anywhere. You just saved me a lot of time. I'm trying to finish up Dazzler emulation on AltairZ80 simulator. I'm having a problem getting the EVEN/ODD and VBLANK bits working. Would anyone know where I can get a CDOS disk image...