jscrane/cpm80

CP/M-80 emulated on Stellarpad, ESP8266 and ESP32

cpm80's Issues

TO-DOs

• handling function keys
• wordstar using instructions here
• cp/m 3.0
• z80 cpu

Drive handling on ESP32

Dir seems broken: empty info in listing.

Document disk-image creation

• install cpmtools
• see z80pack
• cpm 2.2 manual

Improve keyboard handling

Make keyboard handling consistent with other emulators:

• poll keyboard in loop()
• when char detected, process function keys
• otherwise pass to keyboard handler for processing

Disk Cache

• 128kB (23LC1024): 64kB disk cache + 64kB memory
• 512 x 128-byte sectors for 8008 disk sectors (4 x 2002 x 128)
• map sector index (0..8007) to cache index (0..511) by remainder on dividing by 512 (2^9)
• need 4-bits/sector for occupancy id (sector index divided by 512): 256 bytes
• need 1-bit/sector for presence/absence id: 64 bytes

display config

in config.h:

• ROWS, COLS
• font

also remove font struct and make chosen font global

Crash on esp8266

Looks like watchdog-related, somehow.