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pet's Introduction

PET

An emulation of the Commodore PET on the same hardware configurations as the UK101.

This PET emulates the graphics keyboard:

  • graphics characters are produced with L-Shift
  • R-Shift acts like normal shift
  • the control keys work with additional mappings:
    • ^T = Delete = Backspace
    • ^Q = Down
    • ^] = Right
    • ^S = Home
    • NUM = ^
  • the numeric keypad is mapped
  • HOME/END/INS/DEL and the arrow keys are mapped (END == CLR)

All of the firmware is from zimmers.net.

Zimmers.net also has some nice games.

Function Keys:

  • F1 = reset
  • F2 = tape advance
  • F3 = tape rewind
  • F4 = load .prg file selected by tape
  • F6 = checkpoint the machine state to disk
  • F7 = restore from selected checkpoint file
  • F10 = watch the CPU execute instructions on the serial port (if compiled with DEBUGGING)

pet's People

Contributors

jscrane avatar

Stargazers

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Watchers

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pet's Issues

Support sound on esp32

See the FAQ section "HOW DO I MAKE SOUND ON MY PET?"

  • POKE 59467,16 turns on sound; address is 0xe84b (VIA+ACR), POKE 59467,0 turns it off
  • POKE 59466,octave (= 15, 51, 85); address is 0xe84a (VIA+SHIFT)
  • POKE 59464,frequency; address is 0xe848 (VIA+T2LO)

Broken programs

  • invaders hangs when shoot one:
09c0 
lda $e840 ; read VIA VPORTB 
and #$20
beq 09c0
  • petpanic hangs reading VIA T1LO and T1LLO in loop

To Do

  • disk I/O
  • extend PIA abstraction from apple1
  • checkpoint and restore (esp via)

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