Micro­power

  

Volume 2, Number 1 – February 1982











Page 18 of 37











EPROM PROGRAMMER/​CHECKER/​READER

Part 2

By C. Bowden

The previous article described an EPROM programmer that I recently designed and built. The present article gives the circuit diagrams of the programmer and a suitable power supply, together with a Veroboard layout for the programmer and the source code of the software necessary for its operation.

Fig. 0 PROGRAMMER POWER SUPPLY

1:;* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
2:;*                                                                                                               *
3:;*                 EPROM PROGRAMMER FOR 2708/2716               *
4:;*                                                                                                               *
5:;* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
6:;
7:;                 FOR NASCOM 2 WITH 4 MHZ CLOCK.
8:;
9:;                                 (NO WAIT STATES)
10:;
11:;
12:;                 WRITTEN FOR MACRO 80 ASSEMBLER.
13:;
14:;         WILL NEED TO BE MODIFIED FOR ZEAP ASSEMBLER.
15:;
16:;                 C.BOWDEN                                 NOV. 1981
17:;
18:;* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
19:;
20:; EQUATES:











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