Re: ROM 3 Questions

["william strutts" <wrstrutts1@home.com>]

"Mitchell Spector" <a_specto@alcor.concordia.ca> wrote in message
3b43e3fd.18187324@newsflash.concordia.ca">news:3b43e3fd.18187324@newsflash.concordia.ca...
> dempson@actrix.gen.nz (David Empson) wrote:
>
> ---------Begin post clipping------------------------------------------
>
> Differences between the two versions of the ROMs in the ROM 3 IIgs
>
> by David Empson (dempson@actrix.gen.nz)
>
> Apple released two sets of ROMs for the "Apple IIgs with 1 megabyte of
> memory", popularly known as the "ROM 3 IIgs".
>
> The original set of ROMs has the serial numbers 341-0728 and 341-0729.
> These are very rare: I only know of one IIgs that has been confirmed
> to have these ROMs.  [Make that two now]
>
> The revised ROMs have the serial numbers 341-0748 and 341-0737.
> These are by far the most common.
>

I now have three ROM 3 boards:

Machine 1:
  341-0748 (28 pin plastic ROM chip)
  341-0728
Machine 2:
  341-0748 (32 pin PROM/EPROM plastic package)
  341-0737
Machine 3:
  341-0749 (32 pin EPROM ceramic package)
  341-0728

Sorry if this mucks up the waters.  Was there some kind of
field bug fix that might have happened on the machines since
they don't conform to the quoted statements above?  The ones
with the 341-0728's should also have the 341-0729's as well
but the two that do have it have different ROM's.
--
--
William R. Strutts - wrstrutts1@home.com - Whatever!

C'est moi!  http://www.facelink.com/wrstrutts

Just hacking away...