Home Computer Group #9

80 pages.

Digital Design
Devices ZOO/4: ROM, EPROM,  PROM, EEPROM 

Superfast
Input Output/1: Addressing decoding overview: Fixed Address decode. Switch-selectable decode. PROM select decode. Indirect port addressing.  

Black Screen

Stunning graphics with a BITter taste.

Commodore 64, Spectrum

Memories:

TMS990, 8088, 68000 the bad, the ugly, and the good.  How Texas lost the war.

GitHub

• Commodore:

  • Deat test cartridge replica, an improved version of the famous cartridge.

  • Skyscrape64, the Commodore 64 port of the Spectrum game.

  • Cart64Out: a good device for the makers

• Apple II

  • Where is Askey, a text-mode-graphic game for Apple II

  • ProDOS8: the source code

  • Price of Persia, the original with the source code released

  • 3D star field: a 65C02 code.

  • A2OSX: multitasking OS for Apple II ( impressive ) 

  • Print 16-bit fixed point fraction. 

• QL

  • Ritimba, the QL porting of the original Spectrum game: Dictator

  • EPROMmer:  an EPROM programmer for QL ( hardware ) 

• MSX

  • MSX2 technical handbook

• Spectrum

  • ZX hardware projects

Smoke signals 

Desoldering. The best guide ever for practical desoldering.

PCB

Which CAD? KiCAD vs Eagle CAD independent comparison

Shop directory

• Sintech: the multicountry shop