Re: Amiga 1000 boot ROMs

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
> 


       Message was sent through the cbm-hackers mailing list

Archive generated by hypermail 2.1.4.