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A ROM emulator for the 71B
01-17-2021, 09:44 AM
Post: #47
RE: A ROM emulator for the 71B
(01-17-2021 01:31 AM)mfleming Wrote:  J-F, your Ultimate ROM has been realized! In addition to enumerating all of the above ROMs and hard ROM, the "hidden" ULIB52 ROM can be switched in and out as needed. Or any other 8K utility ROM you might want on tap - handy if you'd just like to copy a few LEX files to RAM without leaving the whole ROM set in your catalog & lex chain.

Great! But if all the ULIB52 is not constantly on-line, you can't claim it's THE Ultimate ROM :-).

(01-17-2021 03:51 AM)mfleming Wrote:  Yeah, I'm really "bummed" myself about not doing a takeover ROM, but my idea of holding the HALT signal until the internal processor recovers was not treated kindly by J-F, and I strongly suspect it would cause scheduled alarms that wake the 71B to be lost. I'll play around with the idea later when time permits to see if it might actually work.

Mark, if you are able to manage the mechanical aspects: creating a front port housing, building a connector and fitting the electronic inside, I'm sure we would be able to solve these little firmware problems together :-)

(01-17-2021 02:39 AM)Valentin Albillo Wrote:  For what is worth, I've always used the 1BBBB version for the past 35 years for all the sizeable amounts of BASIC code (and some Assembler) I've written for the HP-71B and never ever stumbled upon any problems or bugs.

As I did for many years, until I got a 2CDCC version a few years ago. I agree that most bugs are very specific and rarely happen (but when they do, there is a real risk of Memory Lost), except the DATE bug related to leap years that is quite annoying.

J-F
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Messages In This Thread
A ROM emulator for the 71B - mfleming - 11-06-2020, 08:52 PM
RE: A ROM emulator for the 71B - rprosperi - 11-06-2020, 09:58 PM
RE: A ROM emulator for the 71B - KimH - 11-07-2020, 03:49 PM
RE: A ROM emulator for the 71B - KimH - 11-07-2020, 05:18 PM
RE: A ROM emulator for the 71B - rprosperi - 11-07-2020, 07:19 PM
RE: A ROM emulator for the 71B - mfleming - 11-06-2020, 10:57 PM
RE: A ROM emulator for the 71B - twoweims - 11-07-2020, 01:52 AM
RE: A ROM emulator for the 71B - KimH - 11-07-2020, 03:52 PM
RE: A ROM emulator for the 71B - cdmackay - 11-07-2020, 12:45 AM
RE: A ROM emulator for the 71B - mfleming - 11-07-2020, 03:35 AM
RE: A ROM emulator for the 71B - rprosperi - 11-07-2020, 04:06 AM
RE: A ROM emulator for the 71B - mfleming - 11-07-2020, 07:07 PM
RE: A ROM emulator for the 71B - Sukiari - 11-08-2020, 12:07 AM
RE: A ROM emulator for the 71B - Harald - 11-08-2020, 12:06 PM
RE: A ROM emulator for the 71B - mfleming - 11-08-2020, 08:38 PM
RE: A ROM emulator for the 71B - EmmanuelC - 11-08-2020, 09:24 PM
RE: A ROM emulator for the 71B - Harald - 11-08-2020, 11:02 PM
RE: A ROM emulator for the 71B - mfleming - 11-27-2020, 12:00 AM
RE: A ROM emulator for the 71B - KimH - 11-30-2020, 05:08 PM
RE: A ROM emulator for the 71B - mfleming - 11-09-2020, 01:08 AM
RE: A ROM emulator for the 71B - Moggul - 11-10-2020, 08:12 AM
RE: A ROM emulator for the 71B - Sukiari - 11-27-2020, 12:18 AM
RE: A ROM emulator for the 71B - mfleming - 11-27-2020, 01:45 AM
RE: A ROM emulator for the 71B - Harald - 11-27-2020, 06:07 PM
RE: A ROM emulator for the 71B - mfleming - 11-27-2020, 10:58 PM
RE: A ROM emulator for the 71B - Kevin71B - 01-10-2021, 02:20 PM
RE: A ROM emulator for the 71B - mfleming - 01-17-2021, 01:31 AM
RE: A ROM emulator for the 71B - mfleming - 01-17-2021, 03:51 AM
RE: A ROM emulator for the 71B - J-F Garnier - 01-17-2021 09:44 AM
RE: A ROM emulator for the 71B - mfleming - 01-17-2021, 04:35 AM



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