This is a work-in-progress collection of notes I've been making as I'm exploring the Heathkit H89.
When you turn on your machine it will beep twice: Once for the main motherboard and once for the terminal board.
Before you boot a disk, you'll see the H: "monitor" prompt. To run a memory test from the monitor, use G 7375. To boot a disk, type B and hit RETURN.
If a program hangs and ^C (Ctrl plus C) doesn't help, try pressing right Shift plus Reset.
| 5 DIM H$(15): FOR T=0 TO 9:H$(T)=CHR$(48+T): NEXT T: FOR T=ASC("A") TO ASC("F"): H$(T-55)=CHR$(T): NEXT | |
| 6 DIM R$(7): FOR T=0 TO 7: R$(T)=" ": NEXT | |
| 10 DEFINT A-F, P: D=0: P=VARPTR(D) | |
| 15 INPUT "Start"; ST% | |
| 16 INPUT "End"; EN% | |
| 18 TS$=TIME$ | |
| 20 FOR D=ST% TO EN% | |
| 30 IF (D MOD 8) = 0 THEN PRINT" ";: FOR T=0 TO 7: PRINTR$(T);: NEXT: PRINT: S=0: GOSUB 400 | |
| 40 GOSUB 200 | |
| 90 NEXT |
| /* | |
| * Was originally u2f_hidraw_id.c, | |
| * Copyright (c) 2014-2015 Andrew Lutomirski | |
| * | |
| * Mangled into isu2f.c by hackerb9 in 2022 as a demonstration for firejail. | |
| * | |
| * This program is free software; you can redistribute it and/or | |
| * modify it under the terms of the GNU Lesser General Public | |
| * License as published by the Free Software Foundation; either | |
| * version 2 of the License, or (at your option) any later version. |
