Enemizer migration

enemizer/NMI.asm

@@ -0,0 +1,53 @@
+;-------------
+NMIHookAction:
+{
+    ;-----------------------------------------
+    ; do our shell stuff
+    PHA
+    PHP
+
+    SEP #$20 ; get into 8-bit mode
+    
+    LDA !SHELL_DMA_FLAG : BEQ .return ; check our draw flag
+    AND #$01 : BNE .loadKholdstare
+    LDA !SHELL_DMA_FLAG : AND #$02 : BNE .loadTrinexx
+    BRA .return ; just in case
+    ;BIT #$01 : BEQ .loadKholdstare
+    ;BIT #$02 : BEQ .loadTrinexx
+
+.loadKholdstare
+    JSL DMAKholdstare
+    LDA #$00 : STA !SHELL_DMA_FLAG ; clear our draw flag
+    BRA .return
+
+.loadTrinexx
+    JSL DMATrinexx
+    LDA #$00 : STA !SHELL_DMA_FLAG ; clear our draw flag
+
+.return
+    PLP
+    PLA
+    ;-----------------------------------------
+    ; restore code Bank00.asm (164-167)
+    PHB
+    ; Sets DP to $0000
+    LDA.w #$0000 : TCD
+
+JML.l NMIHookReturn
+}
+
+DMAKholdstare:
+{
+    ;#GFX_Kholdstare_Shell>>16
+    %DMA_VRAM(#$34,#$00,#GFX_Kholdstare_Shell>>16&$FF,#GFX_Kholdstare_Shell>>8&$FF,#GFX_Kholdstare_Shell&$FF,#$10,#$00)
+    RTL
+}
+
+DMATrinexx:
+{
+    ; TODO: change this to trinexx gfx
+    %DMA_VRAM(#$34,#$00,#GFX_Trinexx_Shell>>16,#GFX_Trinexx_Shell>>8&$FF,#GFX_Trinexx_Shell&$FF,#$08,#$00)
+    %DMA_VRAM(#$3A,#$A0,#GFX_Trinexx_Shell2>>16,#GFX_Trinexx_Shell2>>8&$FF,#GFX_Trinexx_Shell2&$FF,#$00,#$C0)
+
+    RTL
+}