Carry flag

Status: Pre-Alpha

Brought to you by: tlscascardo

#1 Carry flag

Milestone: first_release

Status: open

Owner: Thadeu Lima de Souza Cascardo

Labels: alu (1)

Priority: 5

Updated: 2003-05-12

Created: 2003-05-12

Creator: Thadeu Lima de Souza Cascardo

Private: No

The carry flag is uncorrected set when a SUB or DEC
instruction is executed.
This occurs because A and C are negated instead of B.

Discussion

Thadeu Lima de Souza Cascardo - 2003-05-12

Logged In: YES
user_id=473886

A possible and simple solution is to negate the carry, when
notC bit is set and an ADD operation is executed. All this
can be done in alu.c module.

If you would like to refer to this comment somewhere else in this project, copy and paste the following link:

Log in to post a comment.