Don't Read This, total geekery

[RedBeard]

For a little bit of old-timer nerdidity, look at this:

I ran across this website the other day: http://www.retroarchive.org/cpm/archive/unofficial/ and see what I found.

 

Source code from Gary Kildall for the CP/M operating system!

"...

 

/* C P / M B A S I C I / O S Y S T E M (B I O S)

 

COPYRIGHT © GARY A. KILDALL

JUNE, 1975

 

*/

 

DECLARE CONSOLE LITERALLY '00$00$10$00B'; /* READER IS OCT CHANNEL A. */

DECLARE ECHO BYTE INITIAL (0FFH); /* ECHO CALL NO. 1. SEE CALL 30 */

 

 

DISKMON: PROCEDURE(FUNC,INFO) ADDRESS;

DECLARE FUNC BYTE,

LINFO BYTE, /* LOW ORDER INFO */

INFO ADDRESS,

ARET ADDRESS, RET BYTE;

 

/* FUNC IS THE DISK MONITOR FUNCTION NUMBER AS SHOWN BELOW:

0: SYSTEM RESET

1: READ CONSOLE DEVICE

2: WRITE CONSOLE DEVICE

3: READ OCTOPUS

4: WRITE OCTOPUS

5: WRITE LIST DEVICE

6: INTERROGATE MEMORY SIZE

7: INTERROGATE DEVICE STATUS

 

..."

 

Is that cool or what?

[RedBeard]

Hey, all, sorry about the topic title. I thought it was funny, buy now I realize it says nothing about CP/M geekery.

 

Anyhow, I hope that I'm not the only one who appreciates this. Enjoy.

[LoTonah]

Well, I appreciate it!

 

Too bad it's not a later version of CP/M... I think Gary was still experimenting with some features like kernals and bios modules.

 

I'd love to see the code for Concurrent CP/M or GEM someday

 

Thanks!