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.

Circuit Diagram

Fig. 0     Programmer Power Supply

1:;* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
2:;**
3:;*EPROM PROGRAMMER FOR 2708/2716*
4:;**
5:;* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
6:;
7:;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.BOWDENNOV. 1981
17:;
18:;* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
19:;
20:; EQUATES:
Page 18 of 37