SYSTEM IO: Difference between revisions
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== | ==SYSTEM_IO ($C0044A)== | ||
Should be called at the end of the [[68k interrupts|VBlank]] interrupt routine. | Should be called at the end of the [[68k interrupts|VBlank]] interrupt routine. | ||
Revision as of 05:58, 21 October 2012
SYSTEM_IO ($C0044A)
Should be called at the end of the VBlank interrupt routine.
Reads coin and game select inputs, jumps to COIN_SOUND, PLAYER_START or DEMO_END accordingly.
Reads the player inputs and sets values in RAM accordingly, see BIOS_RAM_locations#Joypad_Related.