Difference between revisions of "Z80 in 3 Chips"
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* [https://github.com/douggilliland/Retro-Computers/tree/master/Z80/PSOC/PSOC_Design_Files/Z80-PSoC-3-Chips_002 PSoC Code Github repo] | * [https://github.com/douggilliland/Retro-Computers/tree/master/Z80/PSOC/PSOC_Design_Files/Z80-PSoC-3-Chips_002 PSoC Code Github repo] | ||
| + | |||
| + | === Z80_PSoC Monitor === | ||
| + | |||
| + | [[file:Z80_PSoC_Monitor.PNG]] | ||
| + | |||
| + | === Multiboot Multicomp === | ||
| + | |||
* Z80 NASCOM BASIC | * Z80 NASCOM BASIC | ||
* [https://hackaday.io/project/167711-3-chip-z80-design/log/171007-multi-boot-multicomp-part-3 CP/M Multiboot] - Runs MultiComp 512KB SRAM version | * [https://hackaday.io/project/167711-3-chip-z80-design/log/171007-multi-boot-multicomp-part-3 CP/M Multiboot] - Runs MultiComp 512KB SRAM version | ||
| Line 88: | Line 95: | ||
[[file:Running_Grants_Code_scaled.png]] | [[file:Running_Grants_Code_scaled.png]] | ||
| + | |||
| + | === Reference Designs === | ||
* [https://github.com/douggilliland/Retro-Computers/tree/master/Z80/Reference_Designs Z80 Reference Designs] | * [https://github.com/douggilliland/Retro-Computers/tree/master/Z80/Reference_Designs Z80 Reference Designs] | ||
Revision as of 14:38, 6 September 2022
Features
- Z80
- 12.5 MHz operation
- 512KB SRAM
- PSoC5LP
- PSoC5 LP emulates standard Z80 peripheral chips
- Serial port with USB
- Memory Management Unit (MMU)
- Controls 512KB SRAM
- Loader moves EPROM code to SRAM
- Controls CPU reset
- PSoC5 LP emulates standard Z80 peripheral chips
- Optional MCP23017 16-bit port expander
- I2C Addresses 0x24
- Optional Front Panel
- I2C Addresses 0x20-0x23
- SPI interface for SDHC card
Stackup (top to bottom)
- Front Panel For 8 Bit Computers
- 32 LEDs
- 32 pushbutton switches
- I2C interface
- Z80 in 3 Chips (this card)
- SD_CARD_X49 mounted on CARRIER95TO49MM
- JOYPAD
Connectors
H1 - I2C Interface
- Connects to Front Panel Card via I2C
H2 - ISP Download
- Connects to PSoC programmer
H3- Serial Port or SPI (SD Card)
H4 - I/O
J1 - USB B
- 5V card Power
- USB to Serial comm port
J2, J3 - I/O Ports
- J3 connects to JOYPAD
J4 - Audio Out
- DAC is the Analog function generator in the PSoC
J5 - Z80 Signals
- Useful for monitoring the CPU lines
Software
Z80_PSoC Monitor
Multiboot Multicomp
- Z80 NASCOM BASIC
- CP/M Multiboot - Runs MultiComp 512KB SRAM version
- CP/M 2.2, CP/M 3.0, BASIC
- SBC-2G-512 on Retrobrewing site - Original author
- GitHub copy of SBC-2G-512
Reference Designs
Hackaday Page
Videos
