| 2068 Keyboard Notes | Using IN to read the 2068 keyboard; table of ports and values provided. | Timex/Sinclair 2068 |
| 2068 Keyboard Notes | Description of how the TS 2068 reads the keyboard and port addresses involved. | Timex/Sinclair 2068 |
| 2068 Peculiarities | I discovered something very peculiar about the 2068 when I tried to put some machine code into the area of memory normally occupied by the RAM-resident code “function dispatcher”. It seems as if machine code routines in this area (6200 hex or greater) run more slowly than identical rountines elsewhere in memory. To see this | Timex/Sinclair 2068, Type-in program |
| Cursor Joystick (for the ZX81 & 2068) | Describes how to wire a joystick port for use with a Spectrum ROM. | Timex/Sinclair 1000, Timex/Sinclair 2068 |
| Keyboard Problems | Describes problems encountered when wiring a keyboard in parallel to the existing keyboard. Shortening the cable run helped; replacing original keyboard with new was ultimate solution. | Timex/Sinclair 2068 |
| More Keyboard Notes | Where to purchase surplus keyboards for conversion to the TS 1000. | Timex/Sinclair 1000 |
| RGB Monitor (for 2068) | Instructions for connecting RGB monitor with DIN (round) connector. Transistor sync separator circuit. | Timex/Sinclair 2068 |
| Syncbits | Notes about Spectrum ROM, mass storage options, Koala pad from Zebra, Artworkx. For the TS1000, Tom Bent’s corrected ROM, Sinc-Artist. | Timex/Sinclair 2068 |
| ZX81 Hardware & Software News | Updates on word processing, printing to full size printers, John Oliger video upgrade, hardware, software suppliers. Tips for programming in BASIC. | Timex/Sinclair 1000 |
