OS_Cli, CLI interface
Register parameters
RST 20H, DEFB $84
IN: A = CL_CNT ($00), get CLI use count A = CL_RIM ($01), get raw input BC = timeout in 1/100 second ticks BC = 0, return immediately if no data BC = -1 ($FFFF), wait forever for data A = CL_MBC ($02), meta/base to character conversion DE = meta (D) / base (E) D = $01 SHIFT = $02 CTRL (DIAMOND) = $04 ALT (SQUARE) = $08 special E = base character A = CL_CMB ($03), character to meta/base conversion DE = raw character D = 0, E is ISO character D = 1, E is special character A = CL_INC ($04), increment CLI use count A = CL_DEC ($05), decrement CLI use count A = CL_RES ($06), reset CLI use count A = CL_ACK ($07), acknowledge CLI/Escape D = reset mask (zero to reset): CLM_SH ($01) = SHIFT (bit) CLM_CT ($02) = DIAMOND (bit) OUT, A(in) = CL_CNT, always: Fc = 0 A = CLI use count (A = 0 if no active CLI) IX = keyboard variable frame Registers changed after return: ..BCDEHL/..IY same AF....../IX.. different OUT, A(in) = CL_RIN, successful: Fc = 0 BC = remaining timeout DE = character: D = 0, E is ISO character D = 1, E is special character OUT, A(in) = CL_RIN, failed: Fc = 1 A = RC_ESC A = RC_SUSP A = RC_TIME Registers changed after return: ......HL/IXIY same AFBCDE../.... different OUT, A(in) = CL_MBC, successful: Fc = 0 DE = character: D = 0, E is ISO character D = 1, E is special character OUT, A(in) = CL_MBC, failed: Fc = 1 A = RC_FAIL, not a meaningful character Registers changed after return: ..BC..HL/IXIY same AF..DE../.... different OUT, A(in) = CL_CMB, successful: Fc = 0 DE = meta (D) / base (E) D = $01 SHIFT = $02 CTRL (DIAMOND) = $04 ALT (SQUARE) = $08 special E = base character OUT, A(in) = CL_CMB, failed: Fc = 1 A = RC_FAIL, not a meaningful character Registers changed after return: ..BC..HL/IXIY same AF..DE../.... different OUT, A(in) = CL_INC, CL_DEC, CL_RES always: Fc = 0 Registers changed after return: A.BCDEHL/IXIY same .F....../.... different OUT, A(in) = CL_ACK, always: Fc = 0 Fz = 1, no Escape Fz = 0, Escape D = resulting mask Registers changed after return: A.BCDEHL/IXIY same .F....../.... different
Notes
Internal operating system usage.
CL_CNT can be used to ask system if there is an active CLI.
Related calls
DC_Icl, Invoke new CLI
DC_In, Read from CLI
DC_Out, Write to CLI
DC_Prt, Print to CLI
DC_Rbd, Rebind streams
DC_Xin, examine CLI input
DC_Gen, screen driver SOH call