WANTED: FORTH/Assembler ROM for 71b

[Dave Frederickson]

(01-30-2018 02:20 PM)salvomic Wrote:  

(01-28-2018 01:30 PM)rprosperi Wrote:  The HP-71 FORTH/Assembler, FORTH/41 Emulator, and Diagnostic ROMs cannot be copied to EPROM as they all use fixed-address ROMs.

(01-28-2018 08:43 PM)Dave Frederickson Wrote:  I don't know exactly how the hard-coded portion is programmed into the EPROM, but I would think it would be something that could be duplicated.
...
Dave

it's a pity that module cannot be copied. I've it in the emu 71b and it's ok, the real one seems to be rare or expensive...

Salvo

From the IDS: Hard-configuration is a mask-programmed option which is selected at
mask-generation time for the ROM chip.

So that pretty much kills it for an EPROM.