At last, a bit of spare time and returning to an old thread....
Mac Plus...Beige....
Comes up....4D1E then..... EAE1
???
Phil
On 2/4/05 6:09 AM, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
wrote:
> I've got two Mac Plusi: a beige 1MB and a Platinum one. Between them I have
> a v2 ROM ("Lonely Heifers") and a v3 ROM ("Loud Harmonicas"). I'm looking
> for anyone who has a v1 ROM ("Lonely Hearts"). If you have one, please let
> me know off list. If you don't know, this is how you can find out:
> 1) Boot up with any System.
> 2) Then press the interrupt button* (the rear button on the bottom left-hand
> side, facing front. If you do not have a programmer's switch, shine a
> flashlight though the vent grill and carefully stick a plastic or wooden
> toothpic through the vent grill hitting the rear round button).
> 3) Type at the prompt ">": DM400000 and press "return".
> 4) There will be a hexadecimal "dump" and you'll find the ROM version in the
> top row, column 2 & 3 as follows:
> 4D1E EExx = v1 ("Lonely Hearts")
> 4D1E EAXX = v2 ("Lonely Heifers")
> 4D1F 81xx = v3 ("Loud Harmonicas")
> *FYI -- If your Mac had more RAM installed but not the 128k ROM, you'll get
> a System error dialog box and need to restart.
> 5) Press "G" and hit "return" and you'll be returned to the finder.
>
> Most likely if you have a Platinum Plus or a 512ke or Plus upgraded Mac you
> will not have the v1 ROM, though you might have a v2, unless you had a logic
> board swap at some point with an older logic board. Only a beige Plus will
> have a stock v1 ROM and likewise, unlikely a beige Plus will have a v3 ROM.
>
> If you have a rare v1 ROM (according to Apple they only made about a month &
> half worth) and are interested in doing a little more simple research, let
> me know off list. Thanks! Hope you learned something about your Mac in any
> event.
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