View source for Z80 in 3 Chips

<video type="youtube">OdtYN3vPu_E</video>

== Features ==

[[File:Z80_P865-cropped-720px.jpg]]

* Z80
* 512KB SRAM
* [https://www.mouser.com/new/Cypress-Semiconductor/cypress-psoc5lp/ 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
* Optional [http://ww1.microchip.com/downloads/en/DeviceDoc/20001952C.pdf MCP23017] 16-bit port expander
** I2C Addresses 0x24
* Optional [[Front_Panel_For_8_Bit_Computers|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]]

[[File:Z80_PSOC_P936-CROPPED-720PX.jpg]]

== Connectors ==

=== H1 - I2C Interface ===

* Connects to Front Panel Card via I2C

[[File:Conn_H1.PNG]]

=== H2 - ISP Download ===

* Connects to PSoC programmer

[[File:Conn_H2.PNG]]

=== H3- SD Card ===

[[File:Conn_H3.PNG]]

=== H4 - I/O ===

[[File:Conn_H4.PNG]]

=== J1 - USB B ===

=== J2, J3 - I/O Ports ===

* J3 connects to [[JOYPAD]]

[[File:Conn_J2_J3.PNG]]

=== J4 - Audio Out ===

* DAC is the Analog function generator in the PSoC

[[File:Conn_J4.PNG]]

=== J5 - Z80 Signals ===

[[File:Conn_J5.PNG]]

== Software ==

* [https://github.com/douggilliland/Retro-Computers/tree/master/Z80/PSOC/PSOC_Design_Files/Z80-PSoC-3-Chips_002 PSoC Code Github repo]
* 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
** CP/M 2.2, CP/M 3.0, BASIC
** [https://www.retrobrewcomputers.org/doku.php?id=builderpages:rhkoolstar:sbc-2g-512 SBC-2G-512 on Retrobrewing site] - Original author
** [https://github.com/douggilliland/Retro-Computers/tree/master/Z80/Reference_Designs/MC-2G-512%20(SBC2.0%20by%20koolstar) GitHub copy of SBC-2G-512]
* [https://github.com/douggilliland/Retro-Computers/tree/master/Z80/Reference_Designs Z80 Reference Designs]

== Hackaday Page ==

* [https://hackaday.io/project/167711-3-chip-z80-design Hackaday Page]

== Videos ==

<video type="youtube">OdtYN3vPu_E</video>

<video type="youtube">Fk-pzTs6VlI</video>

<video type="youtube">YRN3O8ZzepI</video>

<video type="youtube">WupSfpHNN78</video>

<video type="youtube">d0mYuHpPrPY</video>

== Assembly Sheet ==

* [[Z80 in 3 Chips Assembly Sheet]]