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Reading a Serial/AppleNet from the VSROM?

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blusnowkitty:
So I found a few dumps of some VSROMs on a Bitsavers mirror over here: http://bitsavers.informatik.uni-stuttgart.de/bits/Apple/Lisa/firmware/video/

Is there any way to pull the serial and AppleNet info out of these dumps that doesn't involve tracking down a rare old PROM burner and some NOS 6309s?

rayarachelian:
So, to paraphrase Krombopulos Michael "Oh boy, here I go coding again! I just love codin'"

jamesdenton:
FWIW, the TopMax family can now write to 28L22's, which is a substitute for the 6309. I got a bunch on utsource not long ago. I've got a Python script somewhere that can write a 'master' rom with all 0's for serial and Applenet, and probably wouldn't take much to write whatever serial/applenet you want, if it's helpful to you.

SuigintouLain:
I have a weird one:

240 Serial #: 0f0f 0001 0802 0308 0000 0001 0600 0000
260 AppleNet: 0f0f 0000 0000 0005 0706 0004 0700 0000

Am I reading date "380"?

rayarachelian:

--- Quote from: SuigintouLain on June 19, 2021, 10:47:17 pm ---I have a weird one:

240 Serial #: 0f0f 0001 0802 0308 0000 0001 0600 0000
260 AppleNet: 0f0f 0000 0000 0005 0706 0004 0700 0000

Am I reading date "380"?

--- End quote ---

I wonder, what does the label on your Lisa say? Or was this just a VSROM outside of a Lisa? Does it match what Service Mode shows?

I wrote this code blind, I don't have a VSROM dump from a known Lisa, would need to know what shows up in Service Mode for a specific dump. However as I saw the numbers from bitsavers on the file names match and also saw "82" or "83" they looked reasonable. The last bytes should be 0f0f, but not sure if the Lisa Boot ROM adds those back in or if they should be in the VSROM, etc.

Thanks (and welcome to LisaList) :)

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