DataMuseum.dk

Presents historical artifacts from the history of:

Commodore CBM-900

This is an automatic "excavation" of a thematic subset of
artifacts from Datamuseum.dk's BitArchive.

See our Wiki for more about Commodore CBM-900

Excavated with: AutoArchaeologist - Free & Open Source Software.

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⟦e4d0995be⟧ TextFile

    Length: 421 (0x1a5)
    Types: TextFile
    Notes: UNIX file
    Names: »junk«

Derivation

└─⟦f27320a65⟧ Bits:30001972 Commodore 900 hard disk image with partial source code
    └─⟦f4b8d8c84⟧ UNIX Filesystem
        └─⟦this⟧ »hrtty/src/junk«

TextFile

MMU	= 0x00FC
HS	= 0x3A3A		/ 1st of two hires video segments
HSBASE	= 0x3E00		/ video segment 1, physical page base
HSBASE2	= 0x3F00		/ video segment 2, physical page base
	ld	r2,$HS				/ Do hi-res segments
	soutb	MMU+0x0100,rh2
	ld	r2,$HSBASE
	ld	r3,$HSBASE2
	soutb	MMU+0x0C00,rh2			/ HS base, high
	soutb	MMU+0x0C00,rl2			/ HS base, low
	soutb	MMU+0x0C00,rh3			/ HS2 base, high
	soutb	MMU+0x0C00,rl3			/ HS2 base, low