softwarelist
| name | description | notes |
| zx81_cass | Sinclair ZX81 cassettes | |
|
software
| name | supported | description | year | publisher | cloneof | notes |
| biorhythm | yes | Biorhythms | 1982 | Sinclair Research | | |
|
rom
| name | size | crc | sha1 | offset | status | loadflag | value |
| Biorhythms.A.Instructions.tzx | 11560 | 4290bc1a | 446600a99f718a4441adf790039253183b111131 | | good | | |
| Biorhythms.B.tzx | 7997 | 6734d82a | cb8824f28a341f53c735f4c277601434465a6129 | | good | | |
|
part
| name | interface |
| cass1 | zx81_cass |
| cass2 | zx81_cass |
|