softwarelist
| name | description | notes |
| zx81_cass | Sinclair ZX81 cassettes | |
|
software
| name | supported | description | year | publisher | cloneof | notes |
| blkcrystl | yes | Black Crystal | 1982 | Carnell | | |
|
rom
| name | size | crc | sha1 | offset | status | loadflag | value |
| BlackCrystal.1A.tzx | 17518 | 307aa17e | 0d824dff122ac0cad34b1370c6fa5c131350303e | | good | | |
| BlackCrystal.1B.tzx | 32770 | d609b241 | f1f857aa857cea6a5236d423ab89d066d1885ad8 | | good | | |
| BlackCrystal.2A.tzx | 32804 | 4961dd59 | 55a0088f0d8dd118f1f364f0c7bc2679c4898287 | | good | | |
| BlackCrystal.2B.tzx | 32284 | 4a040e40 | 2264156eb38d953deaee49bb89a2bd44b5a8cb64 | | good | | |
|
part
| name | interface |
| cass1 | zx81_cass |
| cass2 | zx81_cass |
| cass3 | zx81_cass |
| cass4 | zx81_cass |
|