C71 Soft Forth Emulator

[Dave Frederickson]

The CMT C71 Emulator is a Voyager emulator for the 71B. It was developed using Soft Forth and is the only known Soft Forth application.
- http://www.jeffcalc.hp41.eu/emu71/index.html#sforth



It would be nice if we could reverse-engineer a manual. The overlays for C71 are available here and are the only clues to operating the emulator.
- http://hp.giesselink.com/Emu71/Kmlpc/EMU71_Overlays.7z

It is known that the [TO CS]/[TO EB] keys switch between the Computer Scientist (16C) and Engineering/Business (11C/12C) modes, but that's about it.

The ROM image can be loaded into Emu71 or burned into an EPROM for use.

[J-F Garnier]

An additional information on C71, there is a copyright in the C71LEX.
Using the HTA$ function of the JPC ROM:
>ADDR$("C71LEX")
A8000
>HTA$(PEEK$("AA968",78))
Copyright (C) 1987 IOTA Systems; by DJG

I've no idea of what was the IOTA Systems company, and who was DJG, but IOTA is also associated with the Data Communications Pac (HP-82488A), see here.

J-F

[Dave Frederickson]

(12-06-2017 08:34 AM)J-F Garnier Wrote:  An additional information on C71, there is a copyright in the C71LEX.
Using the HTA$ function of the JPC ROM:
>ADDR$("C71LEX")
A8000
>HTA$(PEEK$("AA968",78))
Copyright (C) 1987 IOTA Systems; by DJG

I've no idea of what was the IOTA Systems company, and who was DJG, but IOTA is also associated with the Data Communications Pac (HP-82488A), see here.

J-F

Interesting. I see that the Data Comm Pac was developed and written for HP by Iota Systems and Firmware Specialists, Inc.

Dave