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| author | Nao Pross <naopross@thearcway.org> | 2017-11-23 14:34:55 +0100 |
|---|---|---|
| committer | Nao Pross <naopross@thearcway.org> | 2017-11-23 14:34:55 +0100 |
| commit | 141137dfe5bdc7400d5cc1ad388b670f9f2e9446 (patch) | |
| tree | bef58de3c44787dadb22ec9cf452a3606ddd6708 /sw/z80/tests/pio | |
| parent | Improvements in PIO driver, pio test rewritten in inline asm (diff) | |
| download | z80uPC-141137dfe5bdc7400d5cc1ad388b670f9f2e9446.tar.gz z80uPC-141137dfe5bdc7400d5cc1ad388b670f9f2e9446.zip | |
update cpld files from VHDL dev machine and delete programmer code (unused)
Diffstat (limited to 'sw/z80/tests/pio')
| -rw-r--r-- | sw/z80/tests/pio/main.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/sw/z80/tests/pio/main.c b/sw/z80/tests/pio/main.c index 3687f50..7ac64bc 100644 --- a/sw/z80/tests/pio/main.c +++ b/sw/z80/tests/pio/main.c @@ -3,8 +3,8 @@ #include <stdint.h> #define PIO_A_DATA 0x10 -#define PIO_A_CMD 0x11 -#define PIO_B_DATA 0x12 +#define PIO_B_DATA 0x11 +#define PIO_A_CMD 0x12 #define PIO_B_CMD 0x13 void main(void) @@ -14,21 +14,25 @@ void main(void) ld h, #0x00 ;; set bit mode - ld a, #0xCF - ;; load cmd addr ld c, #PIO_B_CMD + + ld a, #0xCF out (c), a - ;; set output + + ;; set all pins to output ld a, #0x00 out (c), a + ;; disable interrupts ld a, #0x0C out (c), a + ;; load data addr ld c, #PIO_B_DATA loop: out (c), h ld a, h + cpl ld h, a jr loop |