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Increasing the resolution of the screen on the HP28 or HP48. Possible ?
11-23-2017, 09:00 AM (This post was last modified: 11-23-2017 09:26 AM by Alejandro Paz(Germany).)
Post: #1
Increasing the resolution of the screen on the HP28 or HP48. Possible ?
Have someone tried any inroads into increasing the resolution of any of these machines ? Any ideas if the amount of code to change is that large and/or that complicated, I mean there are 128..256 kBytes of mixed code, enough for a lifetime of searching, I think Smile.
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11-23-2017, 01:56 PM
Post: #2
RE: Increasing the resolution of the screen on the HP28 or HP48. Possible ?
(11-23-2017 09:00 AM)Alejandro Paz(Germany) Wrote:  Have someone tried any inroads into increasing the resolution of any of these machines ? Any ideas if the amount of code to change is that large and/or that complicated, I mean there are 128..256 kBytes of mixed code, enough for a lifetime of searching, I think Smile.

I think the most cost-effective (and time-effective) answer would be to simply get a 50g. Same RPL, higher-res LCD.

--Bob Prosperi
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11-23-2017, 06:57 PM
Post: #3
RE: Increasing the resolution of the screen on the HP28 or HP48. Possible ?
Quote:I think the most cost-effective (and time-effective) answer would be to simply get a 50g. Same RPL, higher-res LCD.

I'm not talking about the real HW, my target would be say EMU48 or my own re-implementation of the Saturn chipset with a bigger display: I ask specifically about the SW running on the Machine. When the target is EMU48 (or any other emulator) it is a matter of using a bigger bitmap to display on the PC screen. Sorry for the possible confusion.
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11-24-2017, 06:07 AM
Post: #4
RE: Increasing the resolution of the screen on the HP28 or HP48. Possible ?
Hello,

Unfortunately, most of the 28/48 SW is unable to cope with a different resoltution screen.
Prety much all the UI code is very, very resolution dependent.
The 50G series is a little bit more tolerant of height resolution change and might mostly work with a higher screen, but this is as far as you can go.

Cyrille

Although I work for the HP calculator group, the views and opinions I post here are my own. I do not speak for HP.
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11-24-2017, 06:30 AM
Post: #5
RE: Increasing the resolution of the screen on the HP28 or HP48. Possible ?
Quote:Unfortunately, most of the 28/48 SW is unable to cope with a different resolution screen.
Pretty much all the UI code is very, very resolution dependent.

That, I feared. Sad

Thanks for the answer.
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