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back2root:ibm-pc-ms-dos:instr:btr

BTR - (386+ only)

BTR - Bit Test with Reset

The destination bit indexed by the source value is copied into the Carry Flag and then cleared in the destination.

Usage:

	BTR	dest,src	;

Modifies flags:

CF

Clocks Size
Operands 808x 286 386 486 Bytes
reg16,immed8 - - 6 6 4-8
mem16,immed8 - - 8 8 4-8
reg16,reg16 - - 6 6 3-7
mem16,reg16 - - 13 13 3-7
back2root/ibm-pc-ms-dos/instr/btr.txt · Dernière modification : 2023/03/03 23:53 de 127.0.0.1