UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Zen Z80 editor-assembler for the Grant Searle & RC2014mini/micro/classic

Phil__G · 20th Mar 2023, 3:07 pm

Or Polydos, that was our choice at BT.
Polydos didnt have the start-at-100h imposition that CP/M has and was easier to integrate into the Nascom/Gemini memory map.

Also, whilst you were saving up for a disk system, Gemini had RP/M which allowed you to develop CP/M software with storage on cassette tape!
RP/M was a 'cp/mified' monitor that supported most bdos calls such that simple CP/M programs wouldnt know the difference.
Once an application was loaded (say MBASIC etc), RP/M allowed you to stream just one file on tape.

20th Mar 2023, 3:07 pm	#24
Phil__G Octode Join Date: Mar 2011 Location: North Yorkshire, UK. Posts: 1,118	Re: Zen Z80 editor-assembler for the Grant Searle & RC2014mini/micro/classic Or Polydos, that was our choice at BT. Polydos didnt have the start-at-100h imposition that CP/M has and was easier to integrate into the Nascom/Gemini memory map. Also, whilst you were saving up for a disk system, Gemini had RP/M which allowed you to develop CP/M software with storage on cassette tape! RP/M was a 'cp/mified' monitor that supported most bdos calls such that simple CP/M programs wouldnt know the difference. Once an application was loaded (say MBASIC etc), RP/M allowed you to stream just one file on tape. Last edited by Phil__G; 20th Mar 2023 at 3:13 pm.