Re: Troubles booting my new GS

[rubywand@aol.com (RUBYWAND)]

In article <32398F7A.56EF@pogo.wv.tek.com>, David A Johnston
<davejohn@pogo.wv.tek.com> writes:

>
>I just bought a rom 01, and I can't get it to boot the operating
>system.  When using the original system disk, it comes up with a screen
>that says:
>
>                APPLE II
>
>        PRODOS 16 v1.3        29-JUN-87
>
>               LOADER v1.3
>
>  After 10 or 15 seconds, it beeps and puts this at the top of the
>screen:
>
>02/0020: 02 02
> A=0200 X=0000 Y=BAEA S=BAED D=00C0 P=01
> B=00 K=02 M=00 Q=9E L=0 m=0 x=0 e=0
>*....

     It looks like a program or routine is assuming that you have
expansion RAM installed. The "02/0020: 02 02" is a monitor display of mem
contents at address $0020 in 64K bank $02. The presence of a bunch of
"02"'s indicates that extra RAM is not installed. (If a memory expansion
card is plugged in, it does not seem to be working.)  With no expansion
RAM, main program memory will be 128K, in banks $00 and $01.

    For a ProDOS 16 program to just assume that you have expansion RAM
plugged in is kind of careless; but, it is an understandable mistake.
Within a year of its release, the 'standard GS' had at least 1MB of extra
RAM plugged into the mem expansion Slot (near the front, right side of the
motherboard).

    Try booting some DOS 3.3 (5.25") and ProDOS 8 (5.25" and 3.5")
diskettes. They should start up fine. Some ProDOS 16 wares should boot,
too. 


Rubywand