trap

Raises the trap exception selected by the operand. In this editor, trap #15 enters the simulator’s service handler; put its decimal task number in D0.B (for example, task 13 prints a NUL-terminated string). These tasks are separate from CPU exception handling. See the trap tasks reference for each task’s register inputs and results.

Task	Description
0	Print string pointed by a1 with length read in d1.w, null terminated with max of 255, then prints a new line.
1	Print string pointed by a1 with length read in d1.w, null terminated with max of 255.
2	Read a line, writes its first 79 characters at the address of a1 with a null and their count to d1.l.
3	Print signed number at d1.
4	Read a line and convert it to a number in d1.l, as C's atoi does: 12abc is 12, a line with no number is 0.
5	Read one key into d1.b, without waiting for Enter; Enter is $0D.
6	Print character at d1.
7	Check for keyboard input, writes 1 or 0 to d1.b.
8	Get the time in hundredths of a second since the run started, writes to d1.
9	Terminate.
11	Set or get the text cursor, or clear the screen with d1.w = $FF00.
12	Turn the echo of what is typed off with d1.b = 0, on with anything else.
13	Prints null terminated string pointed by a1 then prints new line, errors if string is longer than 16kb, to prevent infinite loops.
14	Prints null terminated string pointed by a1, errors if string is longer than 16kb, to prevent infinite loops.
15	Prints unsigned number at d1 in base (from 2 to 36) specified in d2.b, in upper case
16	Hide (d1.b = 0) or show (1) the input prompt, turn the line feed after Enter off (2) or on (3).
17	Prints the null terminated string at a1, then the signed number in d1.
18	Prints the null terminated string at a1, then reads a number into d1.
19	Reads the state of up to four keys given in d1.l, or the last keys pressed and released with d1.l = 0.
20	Print the signed number in d1 right justified in a field d2.b columns wide; a negative d2.b left justifies it.
23	Delay for the number of hundredths of a second in d1.
24	Enable or disable the simulator shortcut keys; accepted and ignored.
33	Set or get the screen size, or set the window mode.
50-59	Files: close all, open, create, read, write, position, close, delete, the file dialog and whether a file exists.
61	Read the mouse: flags in d0, y:x in d1.
80-96	Graphics: colors, pixels, lines, rectangles, ellipses, flood fill, drawing modes, double buffering, text and the pen position.