softwarelist
| name | description | notes |
| zx81_cass | Sinclair ZX81 cassettes | |
|
software
| name | supported | description | year | publisher | notes | cloneof |
| progpak4 | yes | Program Pack 4 | 1981 | Bug-Byte | | |
|
rom
| name | size | crc | sha1 | offset | status | loadflag | value |
| ProgramPack4.1.Breakout.tzx | 781 | 6c27cb92 | 191ff9739fd156177d78c93b3c34b0ec1874465f | | good | | |
| ProgramPack4.2.Brikthru.tzx | 743 | e840d81b | 831ce6fba62101b5de55a5a215bc2ed873cea7eb | | good | | |
|
part
| name | interface |
| cass1 | zx81_cass |
| cass2 | zx81_cass |
|