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millfork/docs/stdlib/cbm_pet.md

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2020-03-31 17:07:35 +00:00
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# Commodore PET-oriented modules
## pet_kernal module
The `pet_kernal` module is imported automatically on the PET target.
It provides access to Kernal routines.
TODO
#### asm set_zero is_pet2000()
Returns true if the current machine has the original ROM (usually, the PET 2000 series).
When calling from assembly, the result is stored in the Z flag.
#### asm set_zero is_pet3000()
Returns true if the current machine has the upgraded ROM (usually, the PET 3000 series).
When calling from assembly, the result is stored in the Z flag.
#### asm set_zero is_pet4000()
Returns true if the current machine has the 4.0 ROM (usually, the PET 4000 series).
When calling from assembly, the result is stored in the Z flag.