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FALSE (Clear IWA)

Submitted by Steve Fewell

Routine: FALSE
Name: Clear IWA [also: IWA = FALSE]
Starting Address: &ABE8
Entry criteria: None
Exit: IWA contains zero.

Description:
Clears the IWA to zero, and sets A to #&40 to show that an Integer number is being processed.

Disassembly for the Clear IWA routine

ABE8   162 000 A2 00 LDX#&00
ABEA   128 241 80 F1 BRA -15 --> &ABDD Store X (zero) in every byte of the IWA

Store X in every byte of the IWA:

ABDD * 134 042 86 2A STX &2A
ABDF + 134 043 86 2B STX &2B
ABE1 , 134 044 86 2C STX &2C
ABE3 - 134 045 86 2D STX &2D
ABE5 @ 169 064 A9 40 LDA#&40
ABE7 ` 096 60 RTS

 


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