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https://github.com/thamugadi/powerpc-ofw-boot.git
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23 lines
743 B
Forth
23 lines
743 B
Forth
." powerpc-ofw-boot : Booting through OpenFirmware..." cr
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\ storing 0xBE for beige, 0x5A for mac99
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\ cannot use superior, inferior, different symbols (bootinfo.txt)
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: sup - dup abs = ;
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: inf dup sup 1 + ;
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: diff = if 0 else -1 then ;
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: fba frame-buffer-adr ;
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: beige-vram 80000000 ; : mac99-vram 81000000 ;
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: beige-error ." G3 Beige machine isn't supported yet. Please run it with a post-1999 PowerPC Mac." ;
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variable run
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-1 run !
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fba beige-vram = if beige-error cr 100 0 do 0BE i beige-vram + c! loop then
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fba mac99-vram = if ." mac99" cr 100 0 do 05A i mac99-vram + c! loop then
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fba beige-vram diff fba mac99-vram diff and if ." Hardware not supported." cr 0 run ! then
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run @ 0 = if 1 0 do 0 +loop then
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boot hd:,\boot\kernel.elf
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