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 In march 2007 Grant Searle introduced “CP/M on Breadboard”, a 9 chip Z80 CP/M computer using a CF card as mass storage device. (http://searle.hostei.com/grant/ ) I got inspired by his work and created my own version SBC-2G-512K]]
  \\ An FPGA implementation of the earlier mentioned Z80 system. Because the configuration supports a 50 Hz interrupt signal, MP/MII was added to the set of supported operating systems. Also "ROM" basic returns (in a way) \\
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The system will run on Altera Cyclone II (EP2C5) as well as Cyclone IV (EP4CE6) miniboards \\
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The system shown is a prototype of a compact version of a CycloneII-c board with added serial interface connectors (4 in total) \\
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<font 24px/inherit;;inherit;;inherit>MC-2G-1024]] |</font> \\
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  \\ In answer to popular demand: yes it works on a Cyclone VI too \\
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These are the VHDLs I use, \\
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{{:builderpages:rhkoolstar:cycloneiv.zip|Cyclone VI.zip}}  \\   \\  I use the version 130 Quartus software \\   \\  My miniboard is fitted with a 50 MHz oscillator \\   \\  The board shown is a prototype compact version of James Moxham's work with 4 serial interface connectors.   \\

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  \\ On Serial - USB interfaces \\
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Following the FTDI 232 soap I found the following units based on the CP2102 chip to be cheaper and better. It is a 3v3 unit with voltage converter built in, but the inputs are 5v tolerant. A 5v Z80 SIO has no trouble with the 3v3 outputs. All necessary modem lines are available. There is also a 500 mA polyfuse in the 5V line \\
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The board turns into a neat USB plug using a length of heat shrink tube. \\
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look on eBay. They cost about \$1.25 each   \\

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