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pato-z80-home-computer/pat80-io-devices/composite-pal-adapter/software/avr-assembly/README.md
Daniele Verducci su MatissePenguin 36ede10f3b Testing with cat image
2021-02-20 17:02:13 +01:00

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Atmega Microcontroller

Build ASM code

avra filename.asm (generates filename.hex)

Flash

Rom

minipro -w filename.hex -p ATMEGA1284

Fuses

Read fuses: minipro -r -c config -p ATMEGA1284 (-r -c config means read configuration (fuses)) Fuses must be written all together, so read the current values, edit the generated file and write it. The meaning of every bis is in the conf file. Write fuses: minipro -w fuses.conf -c config -p ATMEGA1284

Generate test images

Using GIMP, Image -> Mode -> Indexed, select 2 colors and Posterize. Invert the image colors. Save as .xbm file. Oper with a text editor, you will find an array of byte-packed pixels (every byte represents 8 pixels). Copy and paste on an ASM file.