# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1509989044 -3600
# Node ID 51c387b050029cb86f8266b5a132368c79c9b308
# Parent  0f2d331ec8342bf7c890257b7f2bcd4fe4dc14de
Disabled the reset channel interrupt which appears superfluous for chaining as
well as needing to be handled at the CPU level.

diff -r 0f2d331ec834 -r 51c387b05002 vga.S
--- a/vga.S	Mon Nov 06 18:12:12 2017 +0100
+++ b/vga.S	Mon Nov 06 18:24:04 2017 +0100
@@ -632,22 +632,18 @@
 	li $v1, (1 << 19)	/* CHBCIE = 1 */
 	sw $v1, 0($v0)
 
-	la $v0, DCH1INT
-	li $v1, (1 << 19)	/* CHBCIE = 1 */
-	sw $v1, 0($v0)
-
 	/* Enable interrupt for address updating. */
 
 	la $v0, IPC10
-	li $v1, 0b1111100011111	/* DMA1IP, DMA1IS, DMA0IP, DMA0IS = 0 */
+	li $v1, 0b11111		/* DMA0IP, DMA0IS = 0 */
 	sw $v1, CLR($v0)
 
 	la $v0, IPC10
-	li $v1, 0b1111100011111	/* DMA1IP, DMA0IP = 7, DMA1IS, DMA0IS = 3 */
+	li $v1, 0b11111		/* DMA0IP = 7, DMA0IS = 3 */
 	sw $v1, SET($v0)
 
 	la $v0, IEC1
-	li $v1, (0b11 << 28)	/* IEC1<29:28> = DMA1IE, DMA0IE = 1 */
+	li $v1, (1 << 28)	/* IEC1<28> = DMA0IE = 1 */
 	sw $v1, SET($v0)
 
 	/* Enable line channel. */
@@ -804,7 +800,7 @@
 
 	la $v0, IFS1
 	lw $v1, 0($v0)
-	li $t8, (0b11 << 28)	/* DMA1IF, DMA0IF */
+	li $t8, (1 << 28)	/* DMA0IF */
 	and $v1, $v1, $t8
 	beqz $v1, irq_exit
 	nop