Difference between revisions of "Z80 in 3 Chips"

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Line 14: Line 14:
 
*** Controls 512KB SRAM
 
*** Controls 512KB SRAM
 
** Loader moves EPROM code to SRAM
 
** Loader moves EPROM code to SRAM
 +
** Controls CPU reset
 
* Optional [http://ww1.microchip.com/downloads/en/DeviceDoc/20001952C.pdf MCP23017] 16-bit port expander
 
* Optional [http://ww1.microchip.com/downloads/en/DeviceDoc/20001952C.pdf MCP23017] 16-bit port expander
 
** I2C Addresses 0x24
 
** I2C Addresses 0x24

Revision as of 13:17, 6 September 2022

Features

Z80 P865-cropped-720px.jpg

  • 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
  • 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)

Z80 PSOC P936-CROPPED-720PX.jpg

Connectors

H1 - I2C Interface

  • Connects to Front Panel Card via I2C

Conn H1.PNG

H2 - ISP Download

  • Connects to PSoC programmer

Conn H2.PNG

H3- SD Card

Conn H3.PNG

H4 - I/O

Conn H4.PNG

J1 - USB B

  • Power and USB/Serial

J2, J3 - I/O Ports

Conn J2 J3.PNG

J4 - Audio Out

  • DAC is the Analog function generator in the PSoC

Conn J4.PNG

J5 - Z80 Signals

Conn J5.PNG

Software

Hackaday Page

Videos

Assembly Sheet