C128DCR Jiffydos Eprom Specific NFO Needed.Searched,Found Reg 128 NFO

[skideric]

Just wanting to know specific/proper way to combine Jiffydos & Basic,Etc, to be burned tp Eprom.
And if anyone knows where to locate 128DCR Jiffydos version .I have 1571D Jiffydos file.But only the Regular 128 Jiffydos rom. Any help appreciated!
Thanks! for a Great Forum.

[Mark Smith]

Hi there,

Dead easy really if you have images of the ROMS ... get the JiffyDOS version and the original version in the same folder of windows (say C:\JiffyDOS), open up a command prompt, and go to that folder and do the following command "copy jiffydosrom.bin /b + originalrom.bin /b combined.rom /b"

All that does is combine both files together into "combined.rom", the "/b" makes sure it uses binary mode to do it (DOS being stupid at times we just make sure :-)

Then you find an EPROM big enough .. a 27C256 I think .. and burn that combined ROM into it, the lower 16K would be JiffyDOS, the upper would be the original ... then you have to attack the EPROM with a soldering iron so you can select banks with a switch .. this bit I'm not so good at, as in I've not got around to trying it yet as I've found 3 different ways to do it and don't want to accidently blow my C128 up :-), someone else should be able to fill in the blanks for that bit (and post good instructions with photos please :-)

Regards

Mark

[skideric]

Sure you are talking about C128DCR Version? The DCR has C64 Kernal,C128 Kernal & Maybe Z80 Bios in one Chip.
The Orig 128 & 128D (Portable) uses Two chips. Anyways thanks for Post!

[Mark Smith]

It would be the same process .. except that maybe instead of a 27C256 EPROM you'd need a 27C512 .. not looked at how big those images are .. do you have them ?  If you do how many kilobytes each are they ?

Mark