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Released At :
Vintage Computing Carinthia $04
Credits :
Download :
Look for downloads on external sites:
Pokefinder.org
Summary
Submitted by wil on 6 January 2020
This tool processes files that were generated with Algotech's MUSC converter
(released September 2009 on CSDB: MUSC-Hires Converter)
I really like Algotech's MUSC format and converter, but when it comes to using a
converted pic in one's own program, the fragmented memory layout of a MUSC image
is a pain. An original MUSC file has a size of 121 blocks and spreads its code and data
in the memory area between $0801 and $5f40.
This program takes a generated MUSC picture and packs the code parts closer
together so that the file has now 79 blocks and lies in memory between $31b7 and $5f40
In addition, some small assembler routines are added supporting the use of a MUSC
file as a splash screen:
SYS 24384 ($5F40) Display pic and go into forever loop (original behavior)
SYS 12727 ($31b7) Display pic and return (ROM is banked out -> does not work with BASIC)
SYS 24390 ($5F46) Display pic, wait for key and restore VIC and IRQ settings
SYS 24412 ($5F5C) Stops displaying and restores VIC and IRQ settings
To test the program on the enclosed example.prg, type:
defragmusc -o example-defrag.prg example-musc.prg
This creates a file example-defrag.prg that lies between $31b7 and $5f40.
To use in as a splash screen for your program, load the new file and display it with SYS 24390. |
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