Re: Final H4-ROM patch

From: vossi <vossi_at_ceffy.de>
Date: Fri, 9 Feb 2018 22:23:26 -0700 (MST)
Message-ID: <1518240206487-0.post@n4.nabble.com>
Good morning,
it's exactly like Andre wrote - I want to stay at the original roms but with
minimal changes to use a floppy.
I have the upgraded roms in my 3008, but I want the blue PET mostly
original.
With the 2316B-mainboard it's now very easy, because you don't need adapter
for the lower roms.

I don't know exactly what the revised 019 does, but the diffs to 011 are
only 15 bytes at $C589 - maybe that correct one of the basic bugs in basic1.
This corrected bytes are at the end of the NEW-command (clears everything):

 C589  A8                   TAY           
 C58A  68                   PLA           
 C58B  A2 FE                LDX #$FE      
 C58D  9A                   TXS           
 C58E  48                   PHA           
 C58F  98                   TYA           
 C590  48                   PHA           
 C591  A9 00                LDA #$00      
 C593  85 8D                STA x8D       
 C595  85 61                STA x61       
 C597  60                   RTS           
 C598  51                   .byte $51
 C599  60        iC599      RTS          

@Andre: Do you have any Idea if the not appearing "file not found error" is
a bug in basic1 or in your patch?

Christian
 



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Received on 2018-02-10 06:00:03

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