joppe/z80_monitor
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Relocated monitor to top 16k

Browse Source
This commit is contained in:
Joppe Blondel
2026-09-28 13:54:52 +02:00
parent bedcbfdd24
commit 53b44adcef
3 changed files with 71 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files
Makefile
+24 -11
View File
@@ -9,10 +9,13 @@ METAL_RELFILES := $(METAL_ASM_SRCFILES:%.asm=$(BUILDDIR)/metal/%.rel) \
METAL_CC := sdcc
METAL_AS := sdasz80
METAL_MAKEBIN := makebin
METAL_FLAGS := -mz80 --no-std-crt0 --code-loc 0x0080 --data-loc 0x8000
METAL_FLAGS := -mz80 --no-std-crt0 --code-loc 0xC080 --code-size 0x2F80 --data-loc 0xF000
METAL_CPPFLAGS := -I src -I $(BUILDDIR)/metal/generated --disable-warning 283
METAL_BIN_SIZE := 32768
METAL_RAM_SIZE := 32768
METAL_RAM_SIZE := 16384
METAL_IMAGE_SIZE := 65536
MONITOR_BASE := 0xC000
MONITOR_ROM_OFFSET := 128
.DEFAULT_GOAL := metal
@@ -21,24 +24,34 @@ METAL_RAM_SIZE := 32768
all: metal
metal: $(BUILDDIR)/metal/$(TARGET).ihx $(BUILDDIR)/metal/$(TARGET).bin $(BUILDDIR)/metal/$(TARGET).prog.bin
@awk -v rom_capacity=$(METAL_BIN_SIZE) -v ram_capacity=$(METAL_RAM_SIZE) '\
$$1 ~ /^_(CODE|HOME|GSINIT|GSFINAL|INITIALIZER|ITABLE[0-7]*)$$/ { rom += $$5 } \
$$1 ~ /^_(DATA|INITIALIZED|BSEG|BSS|HEAP|STACK)$$/ { ram += $$5 } \
@stored=$$(wc -c < $(BUILDDIR)/metal/$(TARGET).prog.bin); \
awk -v rom_capacity=$(METAL_BIN_SIZE) -v stored=$$stored -v ram_capacity=$(METAL_RAM_SIZE) '\
$$1 ~ /^_(CODE|HOME|GSINIT|GSFINAL|INITIALIZER)$$/ || $$1 ~ /^_ITABLE/ { code += $$5 } \
$$1 ~ /^_(DATA|INITIALIZED|BSEG|BSS|HEAP)$$/ { data += $$5 } \
END { \
printf "\nMemory usage:\n"; \
printf " ROM: %5u / %5u bytes (%5.1f%%), %5u bytes free\n", rom, rom_capacity, 100 * rom / rom_capacity, rom_capacity - rom; \
printf " RAM: %5u / %5u bytes (%5.1f%%), %5u bytes free\n", ram, ram_capacity, 100 * ram / ram_capacity, ram_capacity - ram; \
printf " ROM storage: %5u / %5u bytes (%5.1f%%)\n", stored, rom_capacity, 100 * stored / rom_capacity; \
printf " Runtime RAM: %5u / %5u bytes (%5.1f%%), %5u bytes for growth/stack\n", code + data, ram_capacity, 100 * (code + data) / ram_capacity, ram_capacity - code - data; \
printf " code/vector: %5u bytes; static data: %5u bytes\n", code, data; \
}' $(BUILDDIR)/metal/$(TARGET).map
$(BUILDDIR)/metal/$(TARGET).ihx: $(METAL_RELFILES)
@mkdir -p $(@D)
$(METAL_CC) $(METAL_FLAGS) -o $@ $(METAL_RELFILES)
$(BUILDDIR)/metal/$(TARGET).bin: $(BUILDDIR)/metal/$(TARGET).ihx
$(METAL_MAKEBIN) -s $(METAL_BIN_SIZE) $< $@
$(BUILDDIR)/metal/$(TARGET).flat.bin: $(BUILDDIR)/metal/$(TARGET).ihx
$(METAL_MAKEBIN) -s $(METAL_IMAGE_SIZE) $< $@
$(BUILDDIR)/metal/$(TARGET).prog.bin: $(BUILDDIR)/metal/$(TARGET).ihx
$(METAL_MAKEBIN) -p $< $@
$(BUILDDIR)/metal/$(TARGET).prog.bin: $(BUILDDIR)/metal/$(TARGET).flat.bin
@payload_end=$$(awk '$$1 == "DEF" && $$2 == "monitor_image_end" { print $$3 }' $(BUILDDIR)/metal/$(TARGET).noi); \
payload_size=$$((payload_end - $(MONITOR_BASE))); \
test $$payload_size -gt 0; \
dd if=$< of=$@ bs=1 count=$(MONITOR_ROM_OFFSET) status=none; \
dd if=$< of=$@ bs=1 skip=$$(( $(MONITOR_BASE) )) seek=$(MONITOR_ROM_OFFSET) count=$$payload_size conv=notrunc status=none
$(BUILDDIR)/metal/$(TARGET).bin: $(BUILDDIR)/metal/$(TARGET).flat.bin $(BUILDDIR)/metal/$(TARGET).prog.bin
dd if=$< of=$@ bs=$(METAL_BIN_SIZE) count=1 status=none
dd if=$(BUILDDIR)/metal/$(TARGET).prog.bin of=$@ conv=notrunc status=none
$(BUILDDIR)/metal/%.rel: %.c
@mkdir -p $(@D)