Difference: RaspiElf (24 vs. 25)

Revision 252018-01-01 - PeterSchmid

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There are BASIC3, Tiny BASIC, and Chuck's Super Monitor EPROM binaries on Lee Hart's The COSMAC ELF Membership Card http://www.sunrise-ev.com/membershipcard.htm website for his famous Membership Card. I have got some old 27C256 EPROMs but no programmer nor eraser.

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< But the MSC needs to have 64 KiB RAM, the standard 62256 RAM in the U2 socket and the CY7C199 (or IDT71256) soldered in U8.

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> But the MSC needs to have 64 KiB RAM, the standard 62256 RAM in the U2 socket and the CY7C199 (or IDT71256) soldered in U8.

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< Type only the bold text after the $ sign.

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First of all you need a serial console (terminal program) to communicate with the Elf. I prefer to use microcom (minicom or putty are good alternatives)

pi@cosmac:~/elf/basic $ sudo apt-get install microcom

The Raspberry Pi UART is used as console (default setting). Change this with raspi-config:

pi@cosmac:~/elf/basic $ sudo raspi-config

Select option 5, Interfacing options, then option P6, Serial, and select No for Would you like a login shell to be accessible over serial? and select Yes for Would you like the serial port hardware to be enabled? . Exit raspi-config. Reboot Raspi now.

Add user pi to the tty group (give user pi the right to write to /dev/ttyS0):

pi@cosmac:~/elf/basic $ sudo usermod -a -G tty pi

Get the binary from The COSMAC ELF Membership Card http://www.sunrise-ev.com/membershipcard.htm

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0x0003 bytes written

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Start the serial console and connect to the Membership Card

pi@cosmac:~/elf/basic $ microcom -s 9600
connected to /dev/ttyS0
Escape character: Ctrl-\
Type the escape character followed by c to get to the menu or q to quit

Membership Card's Serial Monitor Program Ver. 2.0
Enter "H" for Help.
>N 


C RCA 1981
BASIC3 V1.1
C/W?
C
 READY
:PRINT "Hello Raspberry Pi"
Hello Raspberry Pi

READY
:

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> For other than US keyboards you can use Ctrl-4 instead of Ctrl-

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