ST20C2 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST20C2

Instruction Set Reference Manual

STMicroelectronics 

bit number

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

17-16

19-18

20

25-21

30-26

31

full name / description

breakpoint trap status bit

integer error trap status bit

integer overflow trap status bit

illegal opcode trap status bit

load trap trap status bit

store trap trap status bit

internal channel trap status bit

external channel trap status bit

timer trap status bit

timeslice trap status bit

run trap status bit

signal trap status bit

process interrupt trap status bit

queue empty trap status bit

reserved

causeerror status bit

Scheduler trap return priority status bits:

00 - high priority

01 - low priority

Trap group status bits:

00 - Breakpoint

01 - Error

10 - System

11 - Scheduler

timeslice enable bit

reserved

Interrupted operation status bits:

00000 - None

00001 - move

00010 - devmove

00011 - move2dall

00100 - move2dzero

00101 - move2dnonzero

00110 - in

00111 - out

01000 - tin

01001 - tin restart

01010 - taltwt

01011 - taltwt restart

01100 - dist

01101 - dist restart

01110 - enbc

01111 - disc

10000 - resetch

status valid

Table 3.2 Status register

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