X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=ld45_start_nothing;a=blobdiff_plain;f=src%2Fintr.inc;h=a96b164b1e320484265cd13cdd62bf123e189c1d;hp=55a1c9debc6feec2317f739a7ed6ceabba86f5c2;hb=371bbe72cccdd5c40d5118bd0417fab062f3699a;hpb=72eec372bc82e28afee824b440fc76aad177d66b

diff --git a/src/intr.inc b/src/intr.inc
index 55a1c9d..a96b164 100644
--- a/src/intr.inc
+++ b/src/intr.inc
@@ -1,39 +1,45 @@
 ; vi:filetype=nasm ts=8 sts=8 sw=8:
 
-%define IRQ_OFFSET	32
+PIC1_CMD	equ 020h
+PIC1_DATA	equ 021h
+PIC2_CMD	equ 0a0h
+PIC2_DATA	equ 0a1h
+OCW2_EOI	equ 020h
+OCW3_ISR	equ 00bh
+IRQ_OFFSET	equ 32
 %define IRQ_TO_INTR(x)	((x) + IRQ_OFFSET)
 %define INTR_TO_IRQ(x)	((x) - IRQ_OFFSET)
 
+
 %macro set_irq_vector 2
-	push dword IRQ_TO_INTR(%1)
 	push dword %2
+	push dword IRQ_TO_INTR(%1)
 	call set_intr
+	add esp, 8
 %endmacro
 
 %macro mask_irq 1
 %if %1 < 8
-%assign port PIC1_DATA
-%assign mask (1 << %1)
+	in al, PIC1_DATA
+	or al, (1 << %1)
+	out PIC1_DATA, al
 %else
-%assign port PIC2_DATA
-%assign mask (1 << (%1 - 8))
+	in al, PIC2_DATA
+	or al, (1 << (%1 - 8))
+	out PIC2_DATA, al
 %endif
-	in al, port
-	or al, mask
-	out port, al
 %endmacro
 
 %macro unmask_irq 1
 %if %1 < 8
-%assign port PIC1_DATA
-%assign mask ~(1 << %1)
+	in al, PIC1_DATA
+	and al, ~(1 << %1)
+	out PIC1_DATA, al
 %else
-%assign port PIC2_DATA
-%assign mask ~(1 << (%1 - 8))
+	in al, PIC2_DATA
+	and al, ~(1 << (%1 - 8))
+	out PIC2_DATA, al
 %endif
-	in al, port
-	and al, mask
-	out port, al
 %endmacro
 
 %macro end_of_irq 1
@@ -45,3 +51,8 @@
 %endmacro
 
 	extern idt
+
+%ifndef INTR_ASM_
+	extern init_intr
+	extern set_intr
+%endif