RaspiElf < Cosmac

---+ Raspberry Pi Interface to Cosmac Elf

%TOC%


---++ elf2bin Utility
Copies the Elf (Membership Card) memory to a binary file on the Raspberry Pi. 

The Raspberry Pi GPIO is used as interface to the Cosmac Elf SBC (e.g. Elf Membership Card parallel port).

<verbatim>
cc -o elf2bin -lwiringPi elf2bin.c

./elf2bin -s 0 -e ff | hexdump -C
00000000  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
*
00000100
</verbatim>

---++ bin2elf Utility


https://pinout.xyz/#

http://hex2bin.sourceforge.net/

hexdump


/dev/null


---++ Tools

   * elf -i load|run|wait|reset|write|get|put
 


---++ wiringPi

   * http://wiringpi.com/the-gpio-utility/
   * http://raspberrypiguide.de/howtos/raspberry-pi-gpio-how-to/


| *Pi Pin#* | *Pi Function* | *Elf Pin DSUB J2*  | *POWER P4* | *Elf Function*  |
| 1         | 3.3 V         | (18)               | (3)        | (VIN, +)        |         
| 2         | 5 V           | (18)               | 3          | VIN, +          |
| 3         | BCM 2, SDA    |                    |            |                 |
| 4         | 5 V           |                    |            |                 |
| 5         | BCM 3, SCL    |                    |            |                 |
| 6         | GND           | (19)               | 1          | GND, -          |
| 7         | BCM 4         | 1, in              |            | IN-             |
| 8         | BCM 14, TXD   | (20)               | 4, in      | RXD, RX         |
| 9         | GND           | 21                 | 6          | GND, /ON        |
| 10        | BCM 15, RXD   | (15)               | 5, out, Cathode | TXD, TX    |
| 11        | BCM 17        | 14, in             |            | WAIT-           | 
| 12        | BCM 18        | 16, in             |            | CLR-            | 
| 13        | BCM 27        | 17, in             |            | WE-             | 
| 14        | GND           |                    |            |                 |
| 15        | BCM 22        | 2, in              |            | IN0             |
| 16        | BCM 23        | 3, in              |            | IN1             |
| 17        | 3.3 V         |                    |            |                 |
| 18        | BCM 24        | 4, in              |            | IN2             | 
| 19        | BCM 10, MOSI  | 5, in              |            | IN3             | 
| 20        | GND           |                    |            |                 |
| 21        | BCM 9, MISO   | 6, in              |            | IN4             | 
| 22        | BCM 25        | 7, in              |            | IN5             |
| 23        | BCM 11,SCLK   | 8, in              |            | IN6             |
| 24        | BCM 8, CE0    | 9, in              |            | IN7             |
| 25        | GND           |                    |            |                 |
| 26        | BCM 7, CE1    | 25, out, Cathode   |            | O0 (*)          | 
| 27        | BCM 0         |                    |            |                 |
| 28        | BCM 1         |                    |            |                 |
| 29        | BCM 5         | 24, out, Cathode   |            | O1 (*)          | 
| 30        | GND           |                    |            |                 |
| 31        | BCM 6         | 23, out, Cathode   |            | O2 (*)          |
| 32        | BCM 12        | 22, out, Cathode   |            | O3 (*)          |
| 33        | BCM 13        | 13, out, Cathode   |            | O4 (*)          |
| 34        | GND           |                    |            |                 |
| 35        | BCM 18        | 12, out, Cathode   |            | O5 (*)          | 
| 36        | BCM 16        | 11, out, Cathode   |            | O6 (*)          | 
| 37        | BCM 26        | 10, out, Cathode   |            | O7 (*)          | 
| 38        | BCM 20        |                    |            |                 |
| 39        | GND           |                    |            |                 |
| 40        | BCM 21        |                    |            |                 |


-- %USERSIG{PeterSchmid - 2017-11-26}%

---++ Comments

%COMMENT%
   * gpio-numbers-pi2.png: <br />
     <img src="%ATTACHURLPATH%/gpio-numbers-pi2.png" alt="gpio-numbers-pi2.png" width="1498" height="446" />
Attachments
Topic attachments
I	Attachment	History	Action	Size	Date	Who	Comment
png	gpio-numbers-pi2.png	r1	manage	53.2 K	2017-11-26 - 18:46	PeterSchmid
This topic: Cosmac > WebHome > RaspiElf
Topic revision: r8 - 2017-12-08 - PeterSchmid