BEEP!! See AppleSoft BASIC and 6502 assembly language written on an actual Apple IIc ...
summary
Actual Apple IIc boots to an AppleSoft BASIC prompt and a blinking cursor then a live BASIC animation loop is typed that reads joystick via the paddle I/O, plots low‑res graphics, and responds to the button. A handcrafted 6502 assembly routine is hand‑entered into the ROM monitor at a chosen memory address, installed with numeric opcodes, and invoked from BASIC via CALL 768, making screen clears roughly three times faster and demonstrably working on the original hardware.
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chapters (8)
- 0:00Apple IIc and BASIC intro
- 1:49BASIC vs 6502
- 3:37Graphics in AppleSoft BASIC
- 5:49Joystick input in BASIC
- 8:26BASIC vs machine language
- 9:12Entering machine language
- 11:56Optimizing machine code
- 12:18Closing & Q&A
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