From 840f75020a3c03b23d1d261359b3e1e83b574c60 Mon Sep 17 00:00:00 2001
From: Harry Culpan <harry@culpan.org>
Date: Sun, 5 Jul 2026 20:22:44 -0400
Subject: [PATCH] Initial commit, basically just a 'hello world' with a
 Makefile

---
 .gitignore     |  1 +
 Makefile       | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++
 include/util.h |  6 +++++
 ow_setup.sh    |  3 +++
 src/main.c     | 15 ++++++++++++
 src/util.c     |  5 ++++
 6 files changed, 94 insertions(+)
 create mode 100644 Makefile
 create mode 100644 include/util.h
 create mode 100755 ow_setup.sh
 create mode 100644 src/main.c
 create mode 100644 src/util.c

diff --git a/.gitignore b/.gitignore
index c8bb3af..3a5445f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -36,6 +36,7 @@
 *.i*86
 *.x86_64
 *.hex
+*.img
 
 # Debug files
 *.dSYM/
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..8afdb2c
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,64 @@
+# Directory layout
+SRCDIR = src
+OBJDIR = obj
+INCDIR = include
+
+# Compiler and flags
+CC = wcc386
+LD = wlink
+CFLAGS = -zq -i=$(INCDIR)
+
+# Project name (root) — everything else derives from this
+NAME = dspace
+TARGET = $(NAME).exe
+IMG = $(NAME).img
+
+# Deploy location for testing in DOSBox-X
+DOSBOX_DRIVE = ~/DosBox-x/C_Drive
+
+# OpenWatcom DOS extender stub, needed on the disk image alongside TARGET
+DOS4GW = ~/openwatcom_c/binw/dos4gw.exe
+
+# Disk image geometry (1.44MB floppy, FAT12)
+IMG_BLOCKS = 1440
+IMG_FAT = 12
+
+# Source and object files
+SRCS = $(wildcard $(SRCDIR)/*.c)
+OBJS = $(patsubst $(SRCDIR)/%.c,$(OBJDIR)/%.o,$(SRCS))
+DEPS = $(OBJS:.o=.d)
+
+# Default target
+all: $(TARGET)
+
+# Link object files into executable
+$(TARGET): $(OBJS)
+	$(LD) system dos4g name $@ file { $(OBJS) }
+
+# Compile .c files to .o files, with auto-dependency generation
+$(OBJDIR)/%.o: $(SRCDIR)/%.c | $(OBJDIR)
+	$(CC) -fo=$@ $(CFLAGS) -ad=$(@:.o=.d) -adfs $<
+
+# Ensure obj/ exists before any compile runs
+$(OBJDIR):
+	mkdir -p $(OBJDIR)
+
+# Pull in auto-generated header dependencies (silently ignored if missing)
+-include $(DEPS)
+
+# Clean up build artifacts
+clean:
+	rm -f $(OBJS) $(DEPS) $(TARGET) $(IMG)
+
+test: $(TARGET)
+	cp $(TARGET) $(DOSBOX_DRIVE)/
+	echo 'Ready to test'
+
+image: $(TARGET)
+	rm -f $(IMG)
+	dd if=/dev/zero of=$(IMG) bs=1024 count=$(IMG_BLOCKS)
+	mkfs.vfat -F $(IMG_FAT) $(IMG)
+	mcopy -i $(IMG) $(TARGET) ::
+	mcopy -i $(IMG) $(DOS4GW) ::
+
+.PHONY: all clean test image
diff --git a/include/util.h b/include/util.h
new file mode 100644
index 0000000..81c2263
--- /dev/null
+++ b/include/util.h
@@ -0,0 +1,6 @@
+#ifndef _UTIL_H_
+#define _UTIL_H_
+
+void displayMessage(int n);
+
+#endif
diff --git a/ow_setup.sh b/ow_setup.sh
new file mode 100755
index 0000000..0eaa6d2
--- /dev/null
+++ b/ow_setup.sh
@@ -0,0 +1,3 @@
+export WATCOM=~/openwatcom_c
+export PATH=$WATCOM/bin:$WATCOM/binl:$WATCOM/binw:$PATH
+export INCLUDE=$WATCOM/lh
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..eb9662b
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,15 @@
+#include <stdio.h>
+
+#include "util.h" 
+
+void main() {
+  int i = 0;
+
+  printf("DSPACE starting...\n");
+
+  for (i = 0; i < 10; i++) {
+    displayMessage(i + 1);
+  }
+
+  return;
+}
diff --git a/src/util.c b/src/util.c
new file mode 100644
index 0000000..7e20c47
--- /dev/null
+++ b/src/util.c
@@ -0,0 +1,5 @@
+#include <stdio.h>
+
+void displayMessage(int n) {
+    printf("%02d: Hello MS-DOS!\n", n);
+  }