71B EPROM Programming

[rprosperi]

(01-30-2018 04:37 PM)Dave Frederickson Wrote:  Wow! Excellent suggestions. In addition, there was some chatter a while back about the KEYBOARD Rev C LEX.

http://www.hpmuseum.org/forum/thread-5335.html

ML can be stored in an IRAM if you're trying to squeeze files into the EPROM. This could be of interest to those with a stockpile of EPROM's looking to increase their value on eBay and not wanting to include a custom ML file.

Dave

Good thought about including the latest KEYBOARD LEX file in the EPROM image, but keep in mind that an EPROM with this installed will have to be in a lower numbered port than the FORTH/Assembler ROM, for this version to be found.

Except on FRAM-equipped 71B machines, IRAM contents are typically lost when a MEM LOST occurs (depends on why) so keeping ML in an IRAM won't help, as it won't be available when the JPC ROM poll tries to call it.