Squirmy Wormy at Spectrum Computing - Sinclair ZX Spectrum games, software and hardware

General info for: Squirmy Wormy [#ID: 4798]

Title:

Squirmy Wormy

Release Date:

1983

Original Publisher:

John Prince (UK)

Creators:

John Prince (UK)

Availability:

Available

Message Language:

English

Machine Type:

ZX-Spectrum 16K

Genre:

Arcade Game: Action

Maximum Players:

Known Errors:

Bugfix provided by Einar Saukas:

The control keys are complete nonsense. The game recognizes the exact key sequence for the Sinclair 2 input, but the keyboard port MSB bits are inverted, thus it reads the entire keyboard EXCEPT the correct keys. This is the original code:
```
$7b93   nop
$7b94   ld a, $10
$7b96   out ($fe), a
$7b98   in a, ($fe)           ; A=$10 to read all keys except 67890
```
But it should be:
```
$7b93   ld a, $10
$7b95   out ($fe), a
$7b97   cpl
$7b98   in a, ($fe)           ; A=$ef to read only keys 67890
```
Fixed using POKE 31635,62: POKE 31636,16: POKE 31637,211: POKE 31638,254: POKE 31639,47

Squirmy Wormy image, screenshot or loading screen

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