Epson CMOS 32-Bit Single Chip Microcomputer S1C33L03 Uživatelský manuál stáhnout pdf (Strana 77)

7 DETAILS OF INSTRUCTIONS

S1C33 FAMILY C33 PE CORE MANUAL

EPSON

brk

Function

Debugging exception

Standard) W[0x60008]

← pc + 2, W[0x6000C] ← r0, pc ← W[0x60000]

Extension 1) Unusable

Extension 2) Unusable

Code

15 12 11 8 7 4 3 0

0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0

0x0400

Flag

IE C V Z N

– – – – –

Mode

–

CLK

Nine cycles

Description

Calls a debugging handler routine.

The brk instruction stores the address that follows this instruction and the contents of the R0

debug-vector address (0x0060000) and sets it to the PC. Thus the program branches to the debug-

handler routine. Furthermore the processor enters the debug mode.

The

retd instruction must be used for return from the debug-handler routine.

This instruction is provided for debug firmware. Do not use it in general programs.

Example

brk ; Executes the debug-handler routine

1 2 ... 72 73 74 75 76 77 78 79 80 81 82 ... 180 181

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Epson CMOS 32-Bit Single Chip Microcomputer S1C33L03 Uživatelský manuál Strana 77