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[/] [z80soc/] [tags/] [z80soc05c/] [doc/] [README-S3E.txt] - Blame information for rev 31

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Z80 Computer on Spartan 3E Starter Kit
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Arquitecture
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------------
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SW3     - Reserved - Reset
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Memory
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------
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0000H - 01FFH - ROM             (0      - 8191)
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2000H - 27FFH - VIDEO RAM       (8192   - 10239)
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3FE0H - 3FFFH - LCD Video RAM   (16352  - 16383)
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IO
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--
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Output Ports
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------------
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01H     - Green Leds (7-0)
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Inputs
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------
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20H     - SW(3-0)
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30H     - KEY(3-0)
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LCD
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---
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3FE0H   - 3FFFh - LCD video memory (32 characters)
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Video
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-----
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2000H   - 27FFH - Video RAM Memory
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Keyboard
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--------
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80H     - Read Keyboard Ascii code
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--
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Reference Sample ROM
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It is provided a ROM with a reference application, and the correspnding
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Z80 source codes.
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To use the application you will need to connect the S3E board to a
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VGA monitor and PS/2 keyboard.
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The program will show how to use:
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        Input push buttons
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        Input Switches
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        PS/2 keyboard
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        Video text out
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        Leds
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        LCD
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The ROM provided will wait for key East of the S3E to proceed.
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Then, will show the keys type in the keyboard on the second line of the LCD.
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The Switches will be displayed in the LEDS when a key is pressed in the keyboard.
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Key West on the S3E will reset the system.
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Hope you enjoy.
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Bugs
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----
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- Z80 programs that have loops using registers HL, DE, BC are not working. This happens only with S3E port. The DE1 version is working 100% what concerns to z80 programs.
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TO-DO:
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----
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- 80x40 Video display
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- Serial communication
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- Monitor program to allow download of programs by serial communication
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- Mass storage device (SD/MMC)
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- Video colors

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