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how can we define different org addresses on xa65?

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nitrofurano

Post subject: how can we define different org addresses on xa65?

Posted: Tue Aug 28, 2018 2:21 pm

Joined: Sun Aug 26, 2018 7:33 pm
Posts: 4

hi everyone!

on pasmo (z80) i use to define different org addresses along the code (like org $4000, org $5000, etc.) , and all the empty data lasts there in the exact addresses when compiled

i’m strugglng a lot to do the same on xa65 (6502) - when i set, for example *=$1000 , *=$1010, *=$F800 and *=$FFF8, it seems to consider only one of them (*=$1000) and ignore everything else

what am i doing wrong there?

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CurtisP

Post subject: Re: how can we define different org addresses on xa65?

Posted: Thu Aug 30, 2018 8:21 pm

Joined: Thu Feb 10, 2011 3:14 am
Posts: 79

Csn you please post some example code?

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chitselb

Post subject: Re: how can we define different org addresses on xa65?

Posted: Sun Sep 16, 2018 6:37 am

Joined: Sat Aug 21, 2010 7:52 am
Posts: 231
Location: Arlington VA

CurtisP wrote:

Csn you please post some example code?

I am a huge xa65 fan! Here are the only two places where I do a `*=` in my code.

Code:

#define basic $0401
*=basic-2
basic2pettil
    .word basic                 ; PRG file load address `$0401`
    .word basend
    .word 10
    .byt $9E                    ; SYS token
    .asc "1037",0               ; restart #1 (of 3) `liftoff`
basend
    .word 0

elsewhere...
hitop=VIDRAM-$1900
    .word hitop-2               ; load address
    .word tdictend-hitop        ; size of the transient dictionary in bytes
*=hitop
_studio
    jsr enter
    .word plit
    .word there+2
    .word fetchplus
    .word plus
    .word bl
    .word minus
    .word symtab                ; points to unindexed symbol list
    .word store
    .word _splash

within a block of memory I use ` .dsb [size]` instead of `*=*+`

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