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Changes by Karri Kaksonen to implement interruptor support.

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git-svn-id: svn://svn.cc65.org/cc65/trunk@4144 b7a2c559-68d2-44c3-8de9-860c34a00d81
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uz 2009-09-11 13:56:20 +00:00
parent 773e05b5f3
commit d95321f489
1 changed files with 26 additions and 2 deletions
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28
libsrc/lynx/crt0.s
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@ -19,11 +19,12 @@
.export _exit .export _exit
.export __STARTUP__ : absolute = 1 ; Mark as startup .export __STARTUP__ : absolute = 1 ; Mark as startup
.import initlib, donelib .import callirq, initlib, donelib
.import zerobss .import zerobss
.import callmain .import callmain
.import _main .import _main
.import __BSS_LOAD__ .import __BSS_LOAD__
.import __INTERRUPTOR_COUNT__
.import __RAM_START__, __RAM_SIZE__ .import __RAM_START__, __RAM_SIZE__
.include "zeropage.inc" .include "zeropage.inc"
@ -132,9 +133,21 @@ sloop: ldy SuzyInitReg,x
jsr zerobss jsr zerobss
; If we have IRQ functions, set the IRQ vector
; as Lynx is a console there is not much point in releasing the IRQ
lda #<__INTERRUPTOR_COUNT__
beq NoIRQ1
lda #<IRQStub
ldx #>IRQStub
sei
sta INTVECTL
stx INTVECTH
cli
; Call module constructors ; Call module constructors
jsr initlib NoIRQ1: jsr initlib
; Push arguments and call main ; Push arguments and call main
@ -149,3 +162,14 @@ _exit: jsr donelib ; Run module destructors
noret: bra noret noret: bra noret
IRQStub:
phy
phx
pha
cld
jsr callirq
pla
plx
ply
rti