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ROM Program for Microcomputers (RP/M) was installed in Gemini GM811 and GM813 processor cards where disks were not used. It was a 4kB monitor with similar functions to Nascom's NAS-SYS, however the programming interface was virtually identical to CP/M. All software developed using RP/M could be run on CP/M systems and some CP/M software (e.g. MBASIC) would run on a diskless system if it was loaded from tape or an EPROM! The first version was 0.1 which had no reported bugs! However, version 2.0 was released in June 1982 to cope with the "new" 80-track floppy disks and the GM813 processor card. It still had no reported bugs!

Version 0.1
I still need information on this version.

Version 2.0
Main additional features over version 0.1

Version 2.1
No, this wasn't a version increase because of a bug! The hardware recognition was changed to allow correct operation of a system comprised of a GM811 processor, RP/M 2.0 and a MAP 256kB RAM card. This was caused by the memory addressing ports chosen by MAP.