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HP-48GX ROM P
11-24-2020, 11:52 PM
Post: #1
HP-48GX ROM P
Hi, I have seen a HP48GX ROM Version P with something like P-Cop...

See the attached picture, is this ROM version normal? I have never seen that before.

Thanks
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11-25-2020, 01:52 AM
Post: #2
RE: HP-48GX ROM P
It would be easier to reply if the picture actually was attached...

--Bob Prosperi
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11-25-2020, 03:56 AM
Post: #3
RE: HP-48GX ROM P
HP 48GXs with ROM-P are rare animals, but yes they existed.

https://www.hpmuseum.org/cgi-sys/cgiwrap...i?read=991

Adrian Coto
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11-25-2020, 07:18 AM
Post: #4
RE: HP-48GX ROM P
(11-25-2020 01:52 AM)rprosperi Wrote:  It would be easier to reply if the picture actually was attached...

Hi, sorry, I attached it but I do not know why it has not worked, trying again...


Attached File(s) Thumbnail(s)
   
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11-25-2020, 07:20 AM
Post: #5
RE: HP-48GX ROM P
(11-25-2020 03:56 AM)acoto Wrote:  HP 48GXs with ROM-P are rare animals, but yes they existed.

https://www.hpmuseum.org/cgi-sys/cgiwrap...i?read=991

Yeah, but the thing is that it's PCop... version, not P, as I do not have it I cannot edit to read the rest of the string.
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11-25-2020, 09:09 AM (This post was last modified: 11-25-2020 09:41 AM by Giuseppe Donnini.)
Post: #6
RE: HP-48GX ROM P
No mystery here:

The VERSION command returns the following two string objects to stack levels 2 and 1, respectively:

2: "Version HP48-X"
1: "Copyright HP 1993"

where X represents the actual ROM revision number.

Now, you only have to inadvertently hit the [+] key and both strings end up being concatenated, which looks like this:

1: "Version HP48-XCop…

(In the case of string objects, the system decompiler responsible for stack objects does not add line feeds even if you are in multi-line mode, which is the default setting (system flag -52 clear). So the result will always be one single line, if necessary truncated to 19 characters, including the opening double-quote delimiter and the closing ellipsis.)
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11-25-2020, 04:07 PM (This post was last modified: 11-25-2020 04:09 PM by MD80_ESP.)
Post: #7
RE: HP-48GX ROM P
(11-25-2020 09:09 AM)Giuseppe Donnini Wrote:  No mystery here:

The VERSION command returns the following two string objects to stack levels 2 and 1, respectively:

2: "Version HP48-X"
1: "Copyright HP 1993"

where X represents the actual ROM revision number.

Now, you only have to inadvertently hit the [+] key and both strings end up being concatenated, which looks like this:

1: "Version HP48-XCop…

(In the case of string objects, the system decompiler responsible for stack objects does not add line feeds even if you are in multi-line mode, which is the default setting (system flag -52 clear). So the result will always be one single line, if necessary truncated to 19 characters, including the opening double-quote delimiter and the closing ellipsis.)

It's not my calculator or picture, I got it from a seller (I have 48SX and 50G and want a 48GX ROM R), and I should have noticed that (banging head against table)...my stack abilities are a bit rusty :-(

Thanks.
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06-23-2023, 07:14 PM
Post: #8
RE: HP-48GX ROM P
Please add my calculator rom to the list, since this will make it the first GX on the list. The date sequence is unusual as rom version M was still being installed in 48G's at the time, according to the list.

48gx P 3342S10281 Singapore 1993 42

I can email photos or video for verification, let me know where to send it.
A couple years ago I had a guy replace the screen with one from a 38g and all is very nice on it now. On average, the clock speed is 3748864.

35 - 45 - 65 - 48sx/gx - xpander - dm42
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