| GENERAL |
| Type: | 8-bit home computer |
| CPU: | MOS 6502A @ 2 MHz |
| Operating system(s): | Acorn MOS |
| Memory: | ROM: 32 KB
RAM: 16 KB (Expandable to 32 KB) |
| Power supply: | Mains: 220-240 VAC (Built-in switch mode PSU) |
| Current drain / power consumption: | ? W |
| Dimensions (W*H*D): | 400*80*340 mm (15.75*3.15*13.38") |
| Weight: | 4.5 Kg (9.92 lb) |
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| I/O |
| Keyboard: | Integrated |
| Graphics: |
Motorola 6845 CRT controller and Mullard SAA5050 teletext chip
Text
Mode 6: 40*25 characters, 2 colors
Mode 7: 40*25 characters (Teletext), 8 colors
Graphics
Mode 4: 320*256 pixels, 2 colors
Mode 5: 160*256 pixels, 4 colors
NB! Due to the limited 16 KB RAM size, Model A could not display
the resolutions of mode 0, 1, 2 and 3 as in Model B. However, Model A
could be expanded to 32 KB RAM for the full graphics experience.
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| Audio: |
SN76489 chip
4 channels (1 noise, 3 melodic)
Optional speech synthesis with the TMS5220 and TMS6100 chips
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| Storage: |
Tape recorder (300/1200 bd)
Optional floppy drive
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| External I/O ports: |
| RF out: | RCA/Phono (PAL) |
| RGB out: | 6-pin DIN |
| Video out: | BNC (Composite) |
| Tape I/O: | 7-pin DIN |
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| Other: | |
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| MISCELLANEOUS |
| Manufactured: | 1981-1983 (Discontinued) |
| Additional info: |
Introduction price 1981 in the UK: £235.00
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| Related documents: | |
| Modifications and fixes: | |
| Notable "ham" software: | |
| Reviews: | |
| Some options / Accessories: |
?
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?
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"The Tube"
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RS-423 port
Centronics port
20-pin user port
Analog I/O-port
1 MHz expansion port
External second CPU connector
Econet network interface (100 KBit/s)
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