From: William Levak (wlevak_at_cyberspace.org)
Date: 2002-12-28 22:45:03
My 1987 price list gives:
252179-01 A1000 ROM - even
252180-01 A1000 ROM - odd
I don't know what a 28005A is, but there is a series of 2800 and 28C00
EEPROMs that are 28 pin.
On Sat, 28 Dec 2002, Mark wrote:
> Hi,
>
> I recently bought what were described as boot ROMs for the Amiga 1000. (They
> contain the code run at startup to load Kickstart from floppy disk.)
>
> At least some A1000s used EPROMs, but these appear to be mask ROMs. They are
> 28-pin DIP ICs, marked like this:
> MOS
> 252179-01
> ©1985 CBM
> 5185 TAIWAN
> 28005A-0054
>
> MOS
> 252180-01
> ©1985 CBM
> 5085 TAIWAN
> 28005A-0055
>
> A couple of questions:
>
> - Are these actually A1000 boot ROMs?
>
> - Does anyone know the pinout of these chips? I want to dump the data from
> them, but they must be a different pinout to 2764 EPROMs, since using an
> EPROM programmer to read them was unsuccessful.
>
>
> Regards,
> -- Mark
>
>
> Message was sent through the cbm-hackers mailing list
>
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