Articles (1)
| Title | Author(s) | Publication | Date |
|---|---|---|---|
| ZX81 Background Reverse Circuit to invert ZX81 video signal, provides white on black. | Electronics Today International | November 1983 |
| Title | Author(s) | Publication | Date |
|---|---|---|---|
| ZX81 Background Reverse Circuit to invert ZX81 video signal, provides white on black. | Electronics Today International | November 1983 |