| System variables

23734: Channel information

Initialised by the routine at NEW (from the initial channel information table), read by the routines at CHAN_FLAG, CLOSE_2 and OPEN, and updated by the routine at KEY_INPUT. For each channel the output routine address comes before the input routine address and the channel's code.
CHINFO | 23734 | DEFW PRINT_OUT | Keyboard.
| 23736 | DEFW KEY_INPUT
| 23738 | DEFB "K"
| 23739 | DEFW PRINT_OUT | Screen.
| 23741 | DEFW REPORT_J
| 23743 | DEFB "S"
| 23744 | DEFW ADD_CHAR | Work space.
| 23746 | DEFW REPORT_J
| 23748 | DEFB "R"
| 23749 | DEFW PRINT_OUT | Printer.
| 23751 | DEFW REPORT_J
| 23753 | DEFB "P"
| 23754 | DEFB 128 | End marker.