[Home]History of BBC Micro

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Revision 7 . . (edit) December 10, 2001 7:11 pm by Drj [+link]
Revision 6 . . October 3, 2001 6:10 pm by Malcolm Farmer [screen modes added]
Revision 5 . . (edit) October 3, 2001 4:15 am by TwoOneTwo [mentioned Elite]
  

Difference (from prior major revision) (minor diff, author diff)

Changed: 5c5
The CPU was a 6502A 8-bit microprocessor that ran at 2MHz. A new version of BASIC, with a number of extensions to cover hardware features of the machine was allocated 32K of ROM. The machine had a typewriter-style keyboard, rather than the membrane or rubber keys found in many home machines of that time. Video output was to a television or via a RGB socket to a monitor. As was fairly standard at that time, programs were saved and loaded from cassette tapes.
The CPU was a 6502A 8-bit microprocessor that ran at 2MHz. A new version of BASIC, with a number of extensions to cover hardware features of the machine was allocated 32K of ROM. The machine had a typewriter-style keyboard, rather than the membrane or rubber keys found in many home machines of that time. Video output was to a television or via a RGB socket to a monitor. As was fairly standard at that time, programs were saved and loaded from cassette tapes.

Changed: 7,9c7,17
The video display could be switched between 8 different video modes, with varying resolutions and numbers of colours available.

(Table to be inserted here when I look it up)
The video display could be switched between 8 different video modes, with varying resolutions and numbers of colours available:









ModeResolutionTextColoursMemory used
0640 by 25680 by 32220K
1320 by 25640 by 32420K
2160 by 25620 by 321620K
3 - 80 by 25216K
4320 by 25640 by 32210K
5160 by 25620 by 32410K
6 - 40 by 2528K
7teletext?40 by 2516 1K


Changed: 16c24
Even today, (October 2001) thanks to its ready expandability and I/O functions, there are still numbers of BBCs in use, and a large community of dedicated users finding new things to do with the old hardware.
Even today, (October 2001) thanks to its ready expandability and I/O functions, there are still numbers of BBCs in use, and a community of dedicated users finding new things to do with the old hardware.

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