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better Spy vs Spy 2 reset
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parent
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23
src/macros.a
23
src/macros.a
@ -379,6 +379,29 @@
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+RESET_VECTOR .addr
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}
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!macro NEW_RESET_VECTOR_64K .addr {
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lda #$2C
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sta .addr
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lda #$89
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sta .addr+1
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lda #$C0
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sta .addr+2
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lda #$4C ; JMP $FAA6 to reboot
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sta .addr+3
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lda #$A6
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sta .addr+4
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lda #$FA
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sta .addr+5
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lda #<.addr
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sta $3F2
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sta $FFFC
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lda #>.addr
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sta $3F3
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sta $FFFD
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eor #$A5
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sta $3F4
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}
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; for 64k games on ][+ which either hang or restart
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; updates reset hook to reboot on ctrl-reset
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!macro LC_REBOOT {
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@ -8,7 +8,8 @@
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!source "src/prelaunch/common.a"
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+ENABLE_ACCEL
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+NEW_RESET_VECTOR $70
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+NEW_RESET_VECTOR_64K $70
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lda #$60
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sta $DBE
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sta $DE2
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@ -19,8 +20,7 @@
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+ENABLE_ACCEL
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jsr $BCFC ; decompress
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+DISABLE_ACCEL
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jsr $DE5
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jmp $4000
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jmp $DE5
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!if * > $1C0 {
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!error "code is too large, ends at ", *
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