72 lines
1.9 KiB
Makefile
72 lines
1.9 KiB
Makefile
# makefile - High-speed COMM.DRV replacement for MSVC 1.52
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#
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# Build: nmake
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# Clean: nmake clean
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#
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# Prerequisites:
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# - MSVC 1.52 (cl, link in PATH)
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#
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# Output is COMM.DRV -- drop-in replacement for stock Windows 3.1 driver.
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#
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# Install:
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# 1. Copy COMM.DRV to \WINDOWS\SYSTEM
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# 2. Edit SYSTEM.INI [boot] section: comm.drv=comm.drv
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# 3. Add to [386Enh] section: COM1FIFO=1 (for each port in use)
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# 4. Restart Windows
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#
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# Key improvements over stock COMM.DRV:
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# - Both RX and TX FIFOs enabled (stock: RX only)
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# - RX trigger level 8 (stock: 14 -- only 2 bytes headroom)
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# - TX burst writes up to 16 bytes per THRE interrupt (stock: 1 byte)
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CC = cl
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LINK = link
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# Compiler flags:
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# -c Compile only
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# -W3 Warning level 3
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# -ASw Small model, SS!=DS (Windows DLL)
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# -Gsw No stack probes, Windows prolog/epilog
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# -Ow Safe optimizations for Windows
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# -Zp1 Pack structures on 1-byte boundaries (hardware register layouts)
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# -Ze Enable Microsoft extensions
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CFLAGS = -c -W3 -ASw -Gsw -Ow -Zp1 -Ze
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# Linker flags:
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# /NOD No default libraries
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# /NOE No extended dictionary search
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# /AL:16 Segment alignment 16
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LFLAGS = /NOD /NOE /AL:16
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# Libraries
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# sdllcew Small model DLL C runtime (emulated math, Windows)
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# libw Windows API import library
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LIBS = sdllcew libw
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# Output
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TARGET = comm.drv
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# Objects
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OBJS = commdrv.obj isr.obj
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# -----------------------------------------------------------------------
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# Build rules
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# -----------------------------------------------------------------------
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all: $(TARGET)
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$(TARGET): $(OBJS) commdrv.def
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$(LINK) $(LFLAGS) $(OBJS), $(TARGET),,$(LIBS), commdrv.def
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commdrv.obj: commdrv.c commdrv.h
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$(CC) $(CFLAGS) commdrv.c
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isr.obj: isr.c commdrv.h
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$(CC) $(CFLAGS) isr.c
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# -----------------------------------------------------------------------
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# Clean
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# -----------------------------------------------------------------------
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clean:
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-del *.obj
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-del *.drv
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-del *.map
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