Programs must fit within the 0x0100-0xE5FF TPA after runtime, globals,
heap, and stack requirements are included.
The installed operating system is CP/M 2.2. Optional CP/M 3 or emulator-only
BDOS extensions are not supplied by this BIOS/BDOS image. In particular,
software should treat dcc's BDOS-105-backed clock functions as unavailable
unless separately demonstrated on this target.
CP/M filenames and disks retain CP/M 2.2 semantics: 8.3 names, FCB-based
access, 128-byte logical records, and Ctrl-Z text-file conventions where the
dcc API documents them.
The terminal data port returns 0x00 if read while empty. Correct software
must test status bit 0 first; BDOS and the custom BIOS already do so.
Status bit 7 reports WebSocket client connection state to direct-port
software, but CP/M and dcc do not require it for their standard console ABI.
dcc's own emulator and physical-Z80 test history establishes general CP/M
runtime portability, but it does not by itself qualify this board's Pico
trap, custom BIOS, flash backend, or electrical timing.