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Linux Logo in 6502 assembly
11 Commits 1 Branch 0 Tags 820 KiB
Assembly 72.2%
C 25.2%
Makefile 2.6%
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README.md

6502 Linux Logo

Apple \]\[+ Apple \]\[ Apple //e Apple //e+

Linux Logo in 6502 assembly language.

Size: 701 ($2BD) bytes

Features:

  • Detects Apple ][, ][+, //e, //e+, //c, //c+
  • Detects 48K/64K/128K
  • Cleaned up fugly logo by Albert Lai aylai@unixg.ubc.ca
    • Width is now 70 chars to be exact 4 pixels/char for 280 HGR resolution
    • Bit-packed Logo takes up 210 bytes (2 bits/char) compared to 80*12 = 960 byte
    • X is now symmetrical
    • Fixed L,i,n kerning
    • Fixed x Penguin kerning
    • Fixed L to fit
    • Chopped off 2 columns of penguin to fit 70 chars
  • Expands 2 bits to 4 bits = 2 pixels (70 chars * 4 bits = 280 px)
__________________________________________________________@@@@@_______
_________________________________________________________@@@@@@@______
______________A__________________________________________@@_@_@@______
@@@@@@_______AA@_________________________________________@BBBBB@______
__@@__________@________________________________________@@__BBB__@@____
__@@_______AAA__@@@_@@@@___@@@____@@@__@@@@@_@@@@@____@__________@@___
__@@______A__A@__@@@____@@__@@_____@@____@@___@@_____@____________@@__
__@@_____A___A@__@@_____@@__@@_____@@_____@@_@@______@____________@@@_
__@@________AA@__@@_____@@__@@_____@@______@@@______BB@___________@@B_
__@@_____@_AA@___@@_____@@__@@_____@@_____@@_@@____BBBBB@_______@BBBBB
__@@____@@_AA@_@_@@_____@@__@@@___@@@____@@___@@___BBBBBB@_____@BBBBBB
@@@@@@@@@@__@@@_@@@@___@@@@___@@@@_@@@_@@@@@_@@@@@__BBBBB@@@@@@@BBBBB_

See: ascii2hgr2bit for packing ASCII to 2 bits/char. NOTE: PackedLen isn't needed if full 40 bytes HGR width is unpacked to.

Inspired from non-optimized version. Size: 1,573 ($625) bytes