| Software list: | Sinclair ZX81 cassettes (zx81_cass) |
|---|---|
| Short name: | qsdefend |
| Year: | 1982 |
| Publisher: | Quicksilva |
| Supported: | Yes |
| Short name | Description | Year | Publisher | Supported |
|---|---|---|---|---|
| qsdefendb | QS Defenda (Big Picture) | 1981 | Quicksilva | Yes |
| Short name: | cass1 |
|---|---|
| Interface: | zx81_cass |