COSMAC Elf

Some Links and ideas for my COSMAC Elf projects.

Emulator

Uhr

32768 kHz 2^15, Seiko

https://assets.nexperia.com/documents/data-sheet/74HC_HCT4040.pdf

FPGA

http://whats.all.this.brouhaha.com/category/computing/retrocomputing/retrochallenge/

On the XC7A100T-1FGG484, which is the slowest speed grade, it meets timing at 62.5 MHz. Since my 1802 core only needs one clock per machine cycle, versus 8 for the original CDP1802, it runs at the equivalent of a 500 MHz CDP1802.

COLD[CR]
1802 FIG-FORTH R0.4  3/16/81
: SET-LED 61440 C! ; [CR]  OK
: GET-LED 61440 C@ ; [CR]  OK
: DELAY 3000 0 DO LOOP ;[CR]  OK
: LEFT 7 0 DO GET-LED 2 * SET-LED DELAY LOOP ;[CR]  OK
: RIGHT 7 0 DO GET-LED 2 / SET-LED DELAY LOOP ;[CR]  OK
: RUN 1 SET-LED BEGIN LEFT RIGHT ?TERMINAL UNTIL ;[CR]  OK
RUN[CR]

Micro VIP

https://hackaday.io/project/27009-microvip

Forth

Documentation

FIG Forth

CamelForth

Forth on ARM

EPROM Programmer

27C256 evtl. 28C256, Ich habe noch 2 Stk. 27C256 EPROM im Keller!

Propeller ELF

http://humanoidolabs.blogspot.ch/2012/03/propeller-elf-ii.html

Z280 SBC

https://www.retrobrewcomputers.org/doku.php?id=boards:sbc:cpu280:start

NEC 4bit Microcontroller 75X

μPD75008

75XL μPD750008

ePaper

-- Peter Schmid - 2017-11-15

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