Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

ADC Decimal functionality #1

Open
Spalynx opened this issue Nov 19, 2018 · 0 comments
Open

ADC Decimal functionality #1

Spalynx opened this issue Nov 19, 2018 · 0 comments
Labels
enhancement
Milestone
Post Version 1

Comments

@Spalynx
Copy link
Owner

Spalynx commented Nov 19, 2018

From src/core/cpu_test.rs:
/// Ultimately, it looks like the NES disabled BCD arith "possibly
/// due to patent concerns" (fogleman @ Medium).
/// But I still want the functionality, because of the obscure few
/// famicon games that I've heard rumors about.
/// Implementation of a switch for manual inclusion of this feature
/// will be added to be turned on by the overarching NES system.
/// Since I don't have such an overarching module fully planned,
/// This is going to be turfed to an issue to be solved post v1.
@Spalynx Spalynx added this to the Post Version 1 milestone Nov 19, 2018
Spalynx added a commit that referenced this issue Nov 19, 2018
@Spalynx
Implement SBC fully, and finalize ADC/SBC
ffdc6ce 
Both main arithmetic operations are now complete.
Before turning in for the day, going to try to test/implement the rest
of the basic arithmatic operations so I can finally hit v0.1.1. IT
ONLY TOOK A YEAR.

SBC also has the same hold on decimal mode, going to add a note about
SBC on Issue #1.
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees
No one assigned
Labels
enhancement
Projects
None yet
Milestone
Post Version 1
Development

No branches or pull requests
1 participant
@Spalynx