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A Interface to adapt modern SD Card to the old MSX computers
...For the MSX it will be as if there is a magnetic disk drive with a real magnetic disk but for real it will be accessing a .dsk file inside a sdcard.
Development tools used are:
- Kicad version 2013-07-07
- Microchip XC8 v1.21 (free mode)
- Micrchip MPLAB X IDE v1.90
- Altera´s Quartus Web Edition 11.0
UPDATE 2014-11-05
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Now it is working and the SVN repositories has it all: Schematics, PCB layout, firmware for the CPLD and the firmware for the MCU. But you have to download by your own the firmware for the 49F010 on the internet.
cMIPS - an FPGA ready VHDL model for 5-stage pipeline, MIPS32r2 core
...The VHDL model mimics the pipeline design described in Patterson & Hennessy's book (Computer Organisation and Design) and is an almost complete implementation of the MIPS32r2 instruction set. The TLB and assorted control registers will be included soon (as of fev 2015). The model was synthesized for an Altera EP4CE30F23. The model uses up 15% of combinational blocks and 5% logic registers.
This project implements a reduced instruction set (RISC) CPU in VHDL. It was designed for the Altera Flex10k20 chip, but the VHDL code should port to any compatable chip. The instruction set is extensive, and the design is easily extendable to 16 bits.
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