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builderpages:rhkoolstar:start [2016/09/17 07:24]
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builderpages:rhkoolstar:start [2017/09/17 11:22]
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| |{{:builderpages:rhkoolstar:20160915_115727.jpg?nolink&512x360}}| \\ \\ 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/|http://searle.hostei.com/grant/]] ) \\ \\ \\ I got inspired by his work and created my own version \\ \\ [[:builderpages:rhkoolstar:sbc-2g-512|SBC-2G-512k]] | | | | \\ \\ [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:rhkoolstar:cpmega88.jpg|{{:builderpages:rhkoolstar:cpmega88.jpg?direct&512x348}}]] \\ \\ Currently supporting CP/M 2.2 and CP/M 3.0 | \\ This ia a fork of Takashi TOYOSHIMA's CP/Mega88 project ([[https://github.com/toyoshim/cp-mega88|https://github.com/toyoshim/cp-mega88]] ), only focussing on the AVR implementation. \\ \\ The project features an Intel 8080 emulator, running in an ATmega88 AVR, in a virtual machine which runs CP/M 2.2 and 3.0. (dual boot) \\ \\ This is a work in progress. Although the system is functional, it is not yet finished. Inside you will find all the files you need to build the system \\ \\ [[:builderpages:rhkoolstar:cp-mega88|CP-Mega88]] | | |
| |{{:builderpages:rhkoolstar:ciiboard.jpg?nolink&512x362}}| \\ \\ 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) \\ \\ The system is laid out to run on Altera Cyclone II (EP2C5) miniboard \\ \\ The system shown is a prototype of a compact version of a CycloneII-c board with added serial interface connectors (4 in total) \\ \\ [[:builderpages:rhkoolstar:mc-2g-1024|MC-2G-1024k]] | | | | \\ [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:rhkoolstar:20160915_115727.jpg|{{:builderpages:rhkoolstar:20160915_115727.jpg?direct&512x360}}]] \\ \\ Currently supporting: CP/M 2.2, Dos+ 2.5, ZSDOS 1.1/ZCPR 2, CP/M 3, ZPM3 and NASCOM "ROM" BASIC 4.7 | \\ \\ 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/|http://searle.hostei.com/grant/]] ) \\ \\ \\ I got inspired by his work and created my own version \\ \\ [[:builderpages:rhkoolstar:sbc-2g-512|SBC-2G-512k]] | | |
| |{{:builderpages:rhkoolstar:cycloneiv.jpg?nolink&512x360}}| \\ In answer to popular demand: yes it works on a Cyclone VI too \\ \\ These are the VHDLs I use, \\ \\ {{: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. | | | | \\ [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:rhkoolstar:ciiboard.jpg|{{:builderpages:rhkoolstar:ciiboard.jpg?direct&512x362}}]] \\ \\ Currently supporting: CP/M 2.2, Dos+ 2.5, ZSDOS 1.1 / ZCPR 2, MP/M, CP/M 3, ZPM3 and NASCOM "ROM" BASIC 4.7 | \\ \\ 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. \\ \\ The system is laid out to run on Altera Cyclone II (EP2C5) miniboard \\ \\ The board shown is a compact version of a CycloneII-c board with added serial interface connectors (4 in total) and 5v keyboard interface \\ \\ [[:builderpages:rhkoolstar:mc-2g-1024|MC-2G-1024k]] | | |
| | |[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:rhkoolstar:cycloneiv.jpg|{{:builderpages:rhkoolstar:cycloneiv.jpg?direct&512x360}}]]| \\ In answer to popular demand: yes it works on a Cyclone IV too \\ These are the VHDLs I use, \\ \\ {{:builderpages:rhkoolstar:cycloneiv.zip|Cyclone IV.zip}} \\ \\ I use the version 130 Quartus software \\ \\ My miniboard is fitted with a 50 MHz oscillator \\ \\ The board shown is compact version of James Moxham's work with 4 serial interface connectors and a 5v keyboard interface | | |
| |[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:rhkoolstar:20160915_115804.jpg|{{:builderpages:rhkoolstar:20160915_115804.jpg?direct&512x410}}]]| \\ On Serial - USB interfaces \\ \\ 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 \\ \\ The board turns into a neat USB plug using a length of heat shrink tube. \\ \\ look on eBay. They cost about $1.25 each | | |[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:rhkoolstar:20160915_115804.jpg|{{:builderpages:rhkoolstar:20160915_115804.jpg?direct&512x410}}]]| \\ On Serial - USB interfaces \\ \\ 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 \\ \\ The board turns into a neat USB plug using a length of heat shrink tube. \\ \\ look on eBay. They cost about $1.25 each | | |
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