diff --git a/libsrc/c64/Makefile b/libsrc/c64/Makefile index 57579c685..04e52681c 100644 --- a/libsrc/c64/Makefile +++ b/libsrc/c64/Makefile @@ -55,7 +55,7 @@ OBJS = _scrsize.o \ EMDS = c64-georam.emd c64-ram.emd c64-ramcart.emd c64-reu.emd c64-vdc.emd -JOYS = c64-hitjoy.joy c64-ptvjoy.joy c64-stdjoy.joy +JOYS = c64-hitjoy.joy c64-numpad.joy c64-ptvjoy.joy c64-stdjoy.joy SERS = c64-swlink.ser diff --git a/libsrc/c64/c64-numpad.s b/libsrc/c64/c64-numpad.s new file mode 100644 index 000000000..9d8df253a --- /dev/null +++ b/libsrc/c64/c64-numpad.s @@ -0,0 +1,115 @@ +; +; Joystick driver using C128 number pad in 64 mode. +; May be used multiple times when linked to the statically application. +; +; Stefan Haubenthal, 2004-01-26 +; Based on Ullrich von Bassewitz, 2002-12-20 +; + + .include "zeropage.inc" + + .include "joy-kernel.inc" + .include "joy-error.inc" + .include "c64.inc" + + .macpack generic + + +; ------------------------------------------------------------------------ +; Header. Includes jump table + +.segment "JUMPTABLE" + +; Driver signature + + .byte $6A, $6F, $79 ; "joy" + .byte JOY_API_VERSION ; Driver API version number + +; Button state masks (8 values) + + .byte $02 ; JOY_UP "8" + .byte $10 ; JOY_DOWN "2" + .byte $20 ; JOY_LEFT "4" + .byte $08 ; JOY_RIGHT "6" + .byte $04 ; JOY_FIRE "5" ENTER + .byte $00 ; Future expansion + .byte $00 ; Future expansion + .byte $00 ; Future expansion + +; Jump table. + + .word INSTALL + .word UNINSTALL + .word COUNT + .word READ + +; ------------------------------------------------------------------------ +; Constants + +JOY_COUNT = 1 ; Number of joysticks we support + + +; ------------------------------------------------------------------------ +; Data. + + +.code + +; ------------------------------------------------------------------------ +; INSTALL routine. Is called after the driver is loaded into memory. If +; possible, check if the hardware is present and determine the amount of +; memory available. +; Must return an JOY_ERR_xx code in a/x. +; + +INSTALL: + lda VIC_CLK_128 + cmp #$FF + bne @C128 + lda #JOY_ERR_NO_DEVICE + .byte $2C +@C128: lda #JOY_ERR_OK + ldx #0 + +; rts ; Run into UNINSTALL instead + +; ------------------------------------------------------------------------ +; UNINSTALL routine. Is called before the driver is removed from memory. +; Can do cleanup or whatever. Must not return anything. +; + +UNINSTALL: + rts + + +; ------------------------------------------------------------------------ +; COUNT: Return the total number of available joysticks in a/x. +; + +COUNT: lda #JOY_COUNT + ldx #0 + rts + +; ------------------------------------------------------------------------ +; READ: Read a particular joystick passed in A. +; + +READ: tax ; Clear high byte + lda #$FD + ldy #$FE + sei + sta VIC_KBD_128 + lda CIA1_PRB + and #%00110000 + eor #%00110000 + lsr + lsr + sty VIC_KBD_128 + eor CIA1_PRB + iny + sty VIC_KBD_128 ; Reset to $FF + cli + and #%11111110 + eor #%11111110 + rts +