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Added DMA test that works!

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This commit is contained in:
jespergravgaard 2020-09-25 09:02:06 +02:00
parent feade71602
commit 9150c891b9
2 changed files with 4 additions and 2 deletions
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2
src/main/kc/include/mega65-dma.h
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@ -7,7 +7,6 @@
// DMAgic VHDL source https://github.com/MEGA65/mega65-core/blob/master/src/vhdl/gs4510.vhdl#L4364
// Xemu emulator source https://github.com/lgblgblgb/xemu/blob/master/xemu/f018_core.c
// Registers of the MEGA65 enchanced F018 DMAgic Controller
struct F018_DMAGIC {
// $D700 ADDRLSBTRIG DMAgic DMA list address LSB, and trigger DMA (when written).
@ -39,7 +38,6 @@ struct F018_DMAGIC {
char MISC;
};
// F018A DMA list entry
struct DMA_LIST_F018A {
// DMA command

4
src/test/kc/examples/mega65/dma-test.c
View File

@ -4,6 +4,8 @@
#include <mega65.h>
void main() {
// Map memory to BANK 0 : 0x00XXXX - giving access to I/O
memoryRemap(0,0,0);
// Enable enable F018B mode
DMA->EN018B = 1;
// Set address of DMA list
@ -12,6 +14,8 @@ void main() {
DMA-> ADDRMSB = >&DMA_SCREEN_UP;
// Trigger the DMA (without option lists)
DMA-> ADDRLSBTRIG = <&DMA_SCREEN_UP;
// Re-enable F018A mode
DMA->EN018B = 0;
}
// DMA list entry that scrolls the default screen up