ZX Spectrum T-shirts!
Ready prompt T-shirts!
ZX81 T-shirts!
Arcade cherry T-shirts!
Spiral program T-shirts!
Atari joystick T-shirts!
Battle Zone T-shirts!
Vectrex ship T-shirts!
Competition Pro Joystick T-shirts!
Elite spaceship t-shirt T-shirts!
Atari ST bombs T-shirts!
Moon Lander T-shirts!
C64 maze generator T-shirts!
Pak Pak Monster T-shirts!
BASIC code T-shirts!
Breakout T-shirts!
Vector ship T-shirts!
Pixel adventure T-shirts!
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This 6502 modular system was the first computer produced by Acorn in 1979. It was basically the same type of computer as competitors offered at that time (KIM-1, MK14, Nascom, etc...) : a 6502 or Z80 CPU (in this case, a 6502) mounted on a simple "naked" board, with a one-line display and a hexadecimal keyboard.
The System 1 is no exception : it featured an eight-digit seven-segment LED display, a hexadecimal keyboard (25 keys) and as there was no built-in BASIC in the computer, it had only machine-code.
Fortunately there was a tape-recorder interface communicating at 300 bauds.
Like all these types of "hobbyist" computers, the main advantage was the expandability of the system. They were quite cheap machines because they were shipped basically "naked". Then you had to buy whatever cards you wanted (video, BASIC, sound, etc...). Here the system was Eurocard compatible, which was a well-known expansion board standard at that time.
If then you had "too many" expansion cards, a Eurocard rack was available to organise the whole system.
The System 1 itself was composed of two Eurocard boards (one for the CPU and the other for the keypad and display) mounted one above the other (sandwiched, you could say), the two being connected by a ribbon cable.
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Please consider donating your old computer / videogame system to Old-Computers.com or one of our partners from anywhere in the world (Europe, America, Asia, etc.). |
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Hello, please contact me if you have Acorn System 1 (or even System 75, 2, 3, 4 or 5) for sale.I have an address in the US and in Germany.
| | Sunday 11th December 2022 | Achim (USA and Germany) | | |
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Assembled : 222 
