The System 1 consists of 2 Eurocards each measuring 100 x 160mm. The first is the 1MHz 6502 CPU card and the second is the System 1 keyboard card. They are connected together by a ribbon cable.
The CPU card has a 1Mhz crystal and a Rockwell R6502P CPU. It has 2 x NatSemi INS8154 RAM I/O chips, with receivers and drivers for the keypad ribbon cable and the other for the EuroConnector (this allows the CPU card to be used in a System 2, 3 or 4). There are 2 x 2114 providing 1KB of RAM and 2 x 74S571 ROM chips giving 512 Bytes of ROM. There is an empty socket for an 2516 UVPROM and the power connector with a 5V regulator.
The keyboard card has a 9 digit 7 segment LED display (of which only 8 digits are used), and a 25 key hexadecimal keypad. The rest of the card is the CUTS (Computer Users Tape Standard) 300 baud cassette interface.
The Acorn Microcomputer would later be developed into the System 2, 3, 4 and 5.
We currently do not have our charges listed online, but we are happy to quote you by phone. Please call us on 01440 709794 and we'll be happy to help.
Minimum Order Charge
We do have a minimum order charge of £50 (excluding delivery) for all hires. This is to cover the time involved in organising and dispatching a single small item. Sorry :-(
New clients are required to pay in advance by BACS or credit card. Repeat customers can open a credit account with us on 30 days terms.
Multiple Items & Job Lots
If you're looking to fit out an entire set and need many items, we are happy to quote a discounted rate based on the quantity of items.
The term dry hire means to hire an item without having a technician supplied to support it. Most of our small items are available to dry hire, but some of the more complicated equipment that require specialist knowledge are not. In these cases we will deliver the item(s) personally and set them up for you. Please call us for a quotation based on the hire period and location.