EPROM Services
3 Wedgewood Dr., Roundhay, Leeds UK
Products
| Name | Description | Computers |
|---|---|---|
| 8K EPROM Board | Allows up to 8K of EPROM or RAM in 2K blocks to be added in the 8-16K ZX81 memory map. Supplied with EPROM I which contains 40 toolkit type routines, including scroll up/down/left/right, free memory, renumber program length. | Timex/Sinclair 1000 |
| Dual Centronics Interface | Port-mapped expansion board using the Intel 8255 PIA chip. Provides two Centronics ports, one for output to a printer, the other for data input. A 32 byte PROM overrides ROM printer routines and directs the commands to driver software. Fully supports BASIC LPRINT, LLIST and COPY statements. Driver software loads above RAMTOP but can be | Timex/Sinclair 1000 |
| Graphics Generator | Peripheral enabling alternate character sets to be used and printed either from EPROM or user-defined character sets in RAM. 4K of EPROM is supplied containing 4 character sets and routines to print, copy, lprint and switch between character sets. A further 2 x 2K of RAM or EPROM can be added. | Timex/Sinclair 1000 |
| I/O Board | 32 line I/O board. Ports mapped to 4 absolute locations. Port A has 8 LED indicators. Port B has 8 outputs. Splits into 2 ways each so one instruction can be used to switch between two peripherals. Port C is uncommitted. A status indicator gives a 16 LED indicator of the state of Port B. | Timex/Sinclair 1000 |
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