Subject: Re: [stella] BRK instruction: Request for clarification! From: "Eckhard Stolberg" <Eckhard_Stolberg@xxxxxx> Date: Wed, 27 Jul 2005 16:12:46 -0400 |
> If your analysis is correct, what is the point of setting the 'B' flag > *before* pushing the > status register on the stack in an emulator? On a VCS system, it probably > should be set > high during power up and just left there... No? I suppose you are right. That's probably the best way to handle it in a VCS emulator. But as the tutorial on 6502.org says: the B flag is a frequent source of confusion. So maybe we were a bit confused too when we started writing the cpu part for our emulators. ;-) Ciao, Eckhard Stolberg Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://stella.biglist.com
Current Thread |
---|
|
<- Previous | Index | Next -> |
---|---|---|
Re: [stella] BRK instruction: Reque, C. Bond | Thread | [stella] Stella debugger minimum wi, B. Watson |
Re: [stella] Emulator vs. 6507, B. Watson | Date | [stella] Emulator test program, C. Bond |
Month |