Motorola M68CPU32BUG Manuel d'utilisateur télécharger pdf (Page 61)

SYSTEM CALLS

M68CPU32BUG/D REV 1 5-10

.ERASLN Erase Line .ERASLN

5.2.6 Erase Line

SYSCALL .ERASLN

TRAP CODE: $0027

Use .ERASLN to erase the line at the present cursor position.

Entry Conditions:

No arguments required.

Exit Conditions:

The cursor is positioned at the beginning of a blank line.

EXAMPLE

SYSCALL .ERASLN

SYSTEM CALLS

M68CPU32BUG/D REV 1 5-7

.CHKBRK Check for Break .CHKBRK

5.2.3 Check for Break

SYSCALL .CHKBRK

TRAP CODE: $0005

Returns zero (0) status in condition code register if break status is detected at the default input

port.

Entry Conditions:

No arguments or stack allocation required

Exit Conditions:

Z flag set in CCR if break detected

EXAMPLE

SYSCALL .CHKBRK

BEQ BREAK

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Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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Motorola M68CPU32BUG Manuel d'utilisateur Page 61