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https://github.com/dougg3/mac-rom-simm-programmer.git
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7425af761a
This makes the code pretty easily portable to other architectures if someone wants to make a more modern SIMM programmer. I also was pretty careful to split responsibilities of the different components and give the existing components better names. I'm pretty happy with the organization of the code now. As part of this change I have also heavily optimized the code. In particular, the read and write cycle routines are very important to the overall performance of the programmer. In these routines I had to make some tradeoffs of code performance versus prettiness, but the overall result is much faster programming. Some of these performance changes are the result of what I discovered when I upgraded my AVR compiler. I discovered that it is smarter at looking at 32-bit variables when I use a union instead of bitwise operations. I also shaved off more CPU cycles by carefully making a few small tweaks. I added a bypass for the "program only some chips" mask, because it was adding unnecessary CPU cycles for a feature that is rarely used. I removed the verification feature from the write routine, because we can always verify the data after the write chunk is complete, which is more efficient. I also added assumptions about the initial/final state of the CS/OE/WE pins, which allowed me to remove more valuable CPU cycles from the read/write cycle routines. There are also a few enormous performance optimizations I should have done a long time ago: 1) The code was only handling one received byte per main loop iteration. Reading every byte available cut nearly a minute off of the 8 MB programming time. 2) The code wasn't taking advantage of the faster programming command available in the chips used on the 8 MB SIMM. The end result of all of these optimizations is I have programming time of the 8 MB SIMM down to 3:31 (it used to be 8:43). Another minor issue I fixed: the Micron SIMM chip identification wasn't working properly. It was outputting the manufacturer ID again instead of the device ID.
93 lines
4.7 KiB
Makefile
93 lines
4.7 KiB
Makefile
#
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# LUFA Library
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# Copyright (C) Dean Camera, 2011.
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#
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# dean [at] fourwalledcubicle [dot] com
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# www.lufa-lib.org
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#
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# Makefile for the LUFA library itself. This can be used to generate the library documentation.
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# Check to see if the LUFA_PATH variable has not been set (the makefile is not being included from a project makefile)
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ifeq ($(origin LUFA_PATH), undefined)
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LUFA_ROOT_PATH = .
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ARCH = {AVR8,UC3,XMEGA}
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else
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LUFA_ROOT_PATH = $(LUFA_PATH)/LUFA
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endif
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# Check to see if the chip architecture has not been defined in the user makefile, set a default architecture if not
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ifeq ($(origin ARCH), undefined)
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ARCH = AVR8
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endif
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# Define module source file lists
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LUFA_SRC_USB = $(LUFA_ROOT_PATH)/Drivers/USB/Core/$(ARCH)/Device_$(ARCH).c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Core/$(ARCH)/Endpoint_$(ARCH).c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Core/$(ARCH)/Host_$(ARCH).c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Core/$(ARCH)/Pipe_$(ARCH).c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Core/$(ARCH)/USBController_$(ARCH).c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Core/$(ARCH)/USBInterrupt_$(ARCH).c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Core/$(ARCH)/EndpointStream_$(ARCH).c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Core/$(ARCH)/PipeStream_$(ARCH).c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Core/ConfigDescriptor.c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Core/DeviceStandardReq.c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Core/Events.c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Core/HostStandardReq.c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Core/USBTask.c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Class/Common/HIDParser.c
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LUFA_SRC_USBCLASS = $(LUFA_ROOT_PATH)/Drivers/USB/Class/Device/AudioClassDevice.c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Class/Device/CDCClassDevice.c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Class/Device/HIDClassDevice.c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Class/Device/MassStorageClassDevice.c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Class/Device/MIDIClassDevice.c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Class/Device/RNDISClassDevice.c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Class/Host/AndroidAccessoryClassHost.c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Class/Host/AudioClassHost.c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Class/Host/CDCClassHost.c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Class/Host/HIDClassHost.c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Class/Host/MassStorageClassHost.c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Class/Host/MIDIClassHost.c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Class/Host/PrinterClassHost.c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Class/Host/RNDISClassHost.c \
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$(LUFA_ROOT_PATH)/Drivers/USB/Class/Host/StillImageClassHost.c
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LUFA_SRC_TEMPERATURE = $(LUFA_ROOT_PATH)/Drivers/Board/Temperature.c
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LUFA_SRC_SERIAL = $(LUFA_ROOT_PATH)/Drivers/Peripheral/$(ARCH)/Serial_$(ARCH).c
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LUFA_SRC_TWI = $(LUFA_ROOT_PATH)/Drivers/Peripheral/$(ARCH)/TWI_$(ARCH).c
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LUFA_SRC_SCHEDULER = $(LUFA_ROOT_PATH)/Scheduler/Scheduler.c
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# Check to see if the LUFA_PATH variable has not been set (the makefile is not being included from a project makefile)
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ifeq ($(origin LUFA_PATH), undefined)
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LUFA_SRC_ALL_FILES = $(LUFA_SRC_USB) \
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$(LUFA_SRC_USBCLASS) \
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$(LUFA_SRC_TEMPERATURE) \
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$(LUFA_SRC_SERIAL) \
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$(LUFA_SRC_TWI) \
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$(LUFA_SRC_SCHEDULER)
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all:
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clean:
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rm -f $(LUFA_SRC_ALL_FILES:%.c=%.o)
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rm -f $(LUFA_SRC_ALL_FILES:%.c=%.lst)
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clean_list:
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doxygen:
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@echo Generating LUFA Library Documentation...
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( cat Doxygen.conf ; echo "PROJECT_NUMBER=`grep LUFA_VERSION_STRING Version.h | cut -d'"' -f2`" ) | doxygen -
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@echo Documentation Generation Complete.
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clean_doxygen:
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rm -rf Documentation
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checksource:
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version:
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@echo "LUFA `grep LUFA_VERSION_STRING Version.h | cut -d'"' -f2`"
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.PHONY: all clean clean_list doxygen clean_doxygen version
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endif
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