Difference between revisions of "Ports and Connectors"

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{|class="wikitable"
 
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|Odd || Description || Even  || Description
 
|Odd || Description || Even  || Description
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|-
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| 1  || GND    || 2  || GND
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|-
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| 3  || CPU D0  || 4  || CPU D1
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|-
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| 5  || CPU D2  || 6  || CPU D3
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|-
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| 7  || CPU D4  || 8  || CPU D5
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|-
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| 9  || CPU D6  || 10 || CPU D7
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|-
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| 11  || GND    || 12 || GND
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|-
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| 13  || CPU A0 || 14 || CPU A1
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|-
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| 15  || CPU A2 || 16 || CPU A3
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|-
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| 17  || CPU A4 || 18 || CPU A5
 
|-
 
|-
 
| 1  || GND    || 2  || GND
 
| 1  || GND    || 2  || GND

Revision as of 21:16, 1 March 2020

Front Panel

RCA Line In

These are standard RCA Line-In jacks, 2v P-P nominal.

Headphone Jack

Standard 1/8" stereo headphone jack.

SD Card

Standard SD Card slot using custom controller logic instantiated on an FPGA.

Joystick Ports

Joystick ports.png

The joystick ports, from left to right, are numbered 0,1,2,3.

  • Ports 1 and 2 may be electrically configured as 12 bit (S)NES style ports or as TTL ports.
  • Ports 2 and 4 are ATARI/C64 style ports and include analog inputs.
DB9 0-1 (S)NES 0-1 TTL 2-3 ATARI/C64
1 ignored UP UP
2 ignored DOWN DOWN
3 ignored LEFT LEFT
4 ignored RIGHT RIGHT
5 LATCH Button 1 POT-Y
6 DATA Button 0 BUTTON
7 +5 +5 +5
8 GND GND GND
9 CLK Button 2 POT-X

Reset Switch

"Power" LED

The power LED is under software control.

Rear Panel

Power Switch

Just an ordinary rocker switch.

Power

The power connector is a 12v center-positive 2.5mm barrel connector. The bare board should operate on as little as 500ma, but you should plan on more like 3A to cover adding a floppy drive, hard drive, etc.

PS/2 Keyboard and Mouse

  • PS/2 port 0 (Purple) -- nominal keyboard port
  • PS/2 port 1 (Green) -- nominal mouse port

DVI-I

The Video connector is DVI with digital and analog output suitable for use with passive VGA and HDMI adaptors.

Parallel Port

IBM Standard DB25 EPP

Serial Port

IBM Standard DB9 RS232; all pins implemented.

MIDI

  • The port on the left (closest to the serial port) is MIDI OUT.
  • The port on the right (closest to the RCA jacks) is MIDI IN.

Line Out

These are standard RCA Line-Out jacks, 2v P-P nominal.

Internal

J2 (Serial)

The 8-pin serial header follows the DTK/INTEL standard:

P2 (IDE)

Standard 44 Pin 2.5" laptop HDD IDC header.

J-TAG

Standard 10-pin J-TAG connector for reprogramming the FPGAs.

FLOPPY0 and FLOPPY1

FLOPPY0 and FLOPPY1 are electrically standard 3.5" micro Floppy Disk Drive connectors (26 pins FPC Cable).

  • The internal drive is expected to be connected to FLOPPY0.

CN1

J-TAG interface for programming the TRINITY and UNITY FPGAs.

Side Panel

Expansion Connector

Expansion Connector.png

Real Picture Expansion.png

Odd Description Even Description
1 GND 2 GND
3 CPU D0 4 CPU D1
5 CPU D2 6 CPU D3
7 CPU D4 8 CPU D5
9 CPU D6 10 CPU D7
11 GND 12 GND
13 CPU A0 14 CPU A1
15 CPU A2 16 CPU A3
17 CPU A4 18 CPU A5
1 GND 2 GND
3 CPU D0 4 CPU D1
5 CPU D2 6 CPU D3
7 CPU D4 8 CPU D5
9 CPU D6 10 CPU D7
11 GND 12 GND
13 CPU A0 14 CPU A1
15 CPU A2 16 CPU A3
17 CPU A4 18 CPU A5