help burning new dos rom

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Hi All,

I've got a 2031LP that needs a missing UAB5 (e000-ffff) rom. I've found an
image of the rom on Funet and loaded it into the programming software (
Promos 2.0 ) however it seems to be two bytes short. 

I know this because when I load the image into my area of ram before
burning it, which is $2000, Promos says the load is from $2000 - $3ffd.

Shouldn't the image take up from $2000 - $3fff ?

Any help appreciated,

Mike

0
Reply Mike 12/7/2003 3:17:46 AM

I'd be thinking it's (the 64) taking out the first two bytes beliving it's
the load address (irrelevant for a ROM file),  check the start of the file
with a disk editor vs the memory you loaded it into.  I think there is a
promos command to load a file sans load address to a location.

Larry

Mike Paull wrote:

> Hi All,
> 
> I've got a 2031LP that needs a missing UAB5 (e000-ffff) rom. I've found an
> image of the rom on Funet and loaded it into the programming software (
> Promos 2.0 ) however it seems to be two bytes short.
> 
> I know this because when I load the image into my area of ram before
> burning it, which is $2000, Promos says the load is from $2000 - $3ffd.
> 
> Shouldn't the image take up from $2000 - $3fff ?
> 
> Any help appreciated,
> 
> Mike

0
Reply Larry 12/7/2003 5:34:52 AM


Hi Larry,

Your right. I checked the file on the PC using a hex viewer before I copied
it over to the c64, and the first two bytes are missing. 

Looking through the Promos manual the load command optionally lets you
specify a load address, however with or without the file always ends up two
bytes short.

I've found a way around it, and thats to look at what the missing bytes are
using the pc hex viewer and add them to the file on the 64.

It seems to have worked, the 2031LP now powers up ok however it wont talk
to the c64 so there must be some other problem..

mike


On Sun, 07 Dec 2003 05:34:52 GMT, Larry Anderson <larry@portcommodore.com>
wrote:

>I'd be thinking it's (the 64) taking out the first two bytes beliving it's
>the load address (irrelevant for a ROM file),  check the start of the file
>with a disk editor vs the memory you loaded it into.  I think there is a
>promos command to load a file sans load address to a location.
>
>Larry
>
>Mike Paull wrote:
>
>> Hi All,
>> 
>> I've got a 2031LP that needs a missing UAB5 (e000-ffff) rom. I've found an
>> image of the rom on Funet and loaded it into the programming software (
>> Promos 2.0 ) however it seems to be two bytes short.
>> 
>> I know this because when I load the image into my area of ram before
>> burning it, which is $2000, Promos says the load is from $2000 - $3ffd.
>> 
>> Shouldn't the image take up from $2000 - $3fff ?
>> 
>> Any help appreciated,
>> 
>> Mike

0
Reply Mike 12/7/2003 6:10:49 AM

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