diff options
Diffstat (limited to 'sw-old/z80/tests/pio')
| -rw-r--r-- | sw-old/z80/tests/pio/crt0.s | 38 | ||||
| -rw-r--r-- | sw-old/z80/tests/pio/main.c | 50 | ||||
| -rw-r--r-- | sw-old/z80/tests/pio/makefile | 72 |
3 files changed, 160 insertions, 0 deletions
diff --git a/sw-old/z80/tests/pio/crt0.s b/sw-old/z80/tests/pio/crt0.s new file mode 100644 index 0000000..c900065 --- /dev/null +++ b/sw-old/z80/tests/pio/crt0.s @@ -0,0 +1,38 @@ + .module crt0 + .area _HEADER (ABS) + +;; Reset vectors + .org 0 + jp init + + .org 0x38 ; the instruction 0xff (not written) resets to this location + jp init + +;; main code + .org 0x100 + .globl _main + +init: + ;; Set stack pointer directly above top of memory. + ld sp,#0xffff + + ;; Start of the program + call _main + jp _exit + +_exit: + halt + ; jp _exit + +;; Ordering of segments for the linker. + .area _HOME + .area _CODE + .area _INITIALIZER + .area _GSINIT + .area _GSFINAL + + .area _DATA + .area _INITIALIZED + .area _BSEG + .area _BSS + .area _HEAP diff --git a/sw-old/z80/tests/pio/main.c b/sw-old/z80/tests/pio/main.c new file mode 100644 index 0000000..7ac64bc --- /dev/null +++ b/sw-old/z80/tests/pio/main.c @@ -0,0 +1,50 @@ +// #include "pio.h" + +#include <stdint.h> + +#define PIO_A_DATA 0x10 +#define PIO_B_DATA 0x11 +#define PIO_A_CMD 0x12 +#define PIO_B_CMD 0x13 + +void main(void) +{ + __asm + ;; output variable + ld h, #0x00 + + ;; set bit mode + ld c, #PIO_B_CMD + + ld a, #0xCF + out (c), a + + ;; 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 + __endasm; + + // uint8_t i = 0; + + // pio_set_mode(PIO_A, PIO_MODE_BIT_IO, 0x00); + // pio_set_interrupts(PIO_A, PIO_INT_DISABLE); + + // while (1) { + // pio_write(PIO_A, i); + // i = ~i; + // } +}
\ No newline at end of file diff --git a/sw-old/z80/tests/pio/makefile b/sw-old/z80/tests/pio/makefile new file mode 100644 index 0000000..1213902 --- /dev/null +++ b/sw-old/z80/tests/pio/makefile @@ -0,0 +1,72 @@ +#### +# source code settings +# +OSNAME := pio_test + +CSOURCES := $(wildcard *.c) +LIBS := ../../arch/build/arch.a \ + ../../drivers/build/drivers.a + +OBJECTS := $(patsubst %.c,build/%.rel,$(CSOURCES)) +HEXFILE := build/$(OSNAME).hex +BINARY := build/$(OSNAME).bin + +### +# compiler settings +# +CC := sdcc + +CFLAGS := -mz80 \ + --no-std-crt0 build/crt0.rel \ + --allow-unsafe-read \ + -I . \ + -I ../../arch/include \ + -I ../../drivers/include \ + -DDEBUG + +LDFLAGS := -mz80 \ + --no-std-crt0 build/crt0.rel \ + -L ../../drivers/build \ + -l drivers.a \ + -pedantic \ + --code-loc 0x0200 + # --data-loc 0x2000 + +.PHONY: flash dirs dis clean +all: $(BINARY) + +flash: $(BINARY) + minipro -p M28C64 -w $< + +# build binary +$(BINARY): $(OBJECTS) dirs + $(CC) $(LDFLAGS) $(OBJECTS) -o $(HEXFILE) + makebin -s 8192 -yo 1 $(HEXFILE) $(BINARY) + +$(OBJECTS): build/%.rel : %.c $(CSOURCES) dirs build/crt0.rel $(LIBS) + @printf "\n" + $(CC) $(CFLAGS) -c $< -o $@ + +$(LIBS): %.a: + @printf "\n" + make -C $(shell printf $@ | sed 's:build.*.::') + +build/crt0.rel: crt0.s + sdasz80 -o $< + @mv crt0.rel build/ + +dirs: + mkdir -p build + +dis: $(BINARY) + dz80 -b -n -t $(BINARY) + r2 -a z80 $< \ + -c 'afn main 0x200; \ + pd 0x10; \ + s 0x100; \ + pd 10; \ + s 0x200; \ + pd 0x95' | tee build/dis.txt + +clean: + - rm -rd build |