mirror of https://github.com/stid/woz64.git
132 lines
4.5 KiB
NASM
132 lines
4.5 KiB
NASM
#importonce
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#import "../core/mem_map.asm"
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#import "../libs/module.asm"
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// ========================================================
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// ////// PSEUDO COMMANDS /////////////////////////////////
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// ========================================================
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.pseudocommand phy {
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jsr Pseudo._phy
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}
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.pseudocommand ply {
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jsr Pseudo._ply
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}
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.pseudocommand phx {
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jsr Pseudo._phx
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}
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.pseudocommand plx {
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jsr Pseudo._plx
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}
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.pseudocommand phr {
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pha
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phx
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phy
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}
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.pseudocommand plr {
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plx
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ply
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pla
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}
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.filenamespace Pseudo
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// ========================================================
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// ////// METHODS /////////////////////////////////////////
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// ========================================================
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* = * "Pseudo Commands"
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// --------------------------------------------------------
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// init -
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// Module Init.
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// --------------------------------------------------------
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init: {
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lda #$00
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sta MemMap.CORE.xStackOffset
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sta MemMap.CORE.yStackOffset
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rts
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}
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// --------------------------------------------------------
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// toDebug -
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// Print debug info.
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// --------------------------------------------------------
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toDebug: {
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ModuleToDebug(module_type, module_name, version)
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rts
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}
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_phx: {
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pha // Save A
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tya // Tansfer Y in A
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pha // Save Y as A
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inc MemMap.CORE.xStackOffset // Increment Stack offset
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ldy MemMap.CORE.xStackOffset // Load new Stack offset in Y
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txa // Move X in A
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sta MemMap.CORE.XStack, y // Save X (as A) in YStack + offset (y)
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pla // Load saved A (was Y)
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tay // restore Y from A
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pla // restore A
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rts
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}
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_plx: {
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pha // Save A
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tya // Tansfer X in A
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pha // Save X as A
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ldx MemMap.CORE.xStackOffset // Load Stack offset
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lda MemMap.CORE.XStack, x // Load Y from stack
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tax
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dec MemMap.CORE.xStackOffset // Dcrement stack offset
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pla // Load saved A (was X)
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tay // restore X from A
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pla
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rts
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}
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_phy: {
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pha // Save A
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txa // Tansfer X in A
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pha // Save X as A
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inc MemMap.CORE.yStackOffset // Increment Stack offset
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ldx MemMap.CORE.yStackOffset // Load new Stack offset in X
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tya // Move Y in A
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sta MemMap.CORE.YStack, x // Save Y (as A) in XStack + offset (x)
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pla // Load saved A (was X)
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tax // restore X from A
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pla // restore A
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rts
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}
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_ply: {
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pha // Save A
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txa // Tansfer X in A
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pha // Save X as A
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ldx MemMap.CORE.yStackOffset // Load Stack offset
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ldy MemMap.CORE.YStack, x // Load Y from stack
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dec MemMap.CORE.yStackOffset // Dcrement stack offset
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pla // Load saved A (was X)
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tax // restore X from A
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pla // restore A
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rts
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}
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// ========================================================
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// ////// DATA ////////////////////////////////////////////
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// ========================================================
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* = * "Pseudo Data"
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module_type: .byte Module.TYPES.CORE
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version: .byte 1, 0, 0
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.encoding "screencode_mixed"
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module_name:
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.text "pseudo"
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.byte 0
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