+rbairos Posted January 21, 2018 Share Posted January 21, 2018 I have a very simple example that places the player sprite positions.Unfortunately, it results in slightly different positions between stable (5.0.2), and latest github compilations of stella (5.1__a2)Positions are 2,2 in 5.02 but delayed one: 3,3 in 5.1_a2Which one is correct? Secondly, when in the stella debugger, and pressing [scan + 1], those values remain constant,but pressing [Frame + 1] causes random values for those positions, for each click??It goes back to the original values when I press [scan + 1].Is that normal? Very confused by that behaviour,Thanks Rob processor 6502 include vcs.h seg org $F000 Start sei cld ldx #$FF txs ;zero memory lda #0 ClearMem sta 0,X dex bne ClearMem sta WSYNC nop nop nop nop sta RESP0 nop sta RESP1 doFrame1 jmp doFrame1 org $FFFA .word Start ;NMI .word Start ;RESET .word Start ;IRQ Quote Link to comment Share on other sites More sharing options...
DirtyHairy Posted January 21, 2018 Share Posted January 21, 2018 3 is correct; that was a bug I fixed august last year. However, this affects only the debugger; the actual image is identical and correct in 5.0.2 and current git. Not sure about the fluctuations on stepping frames; this looks like a bug to me. You are possible triggering it by not generating a valid frame at all I'll open a ticket tomorrow. 1 Quote Link to comment Share on other sites More sharing options...
+rbairos Posted January 21, 2018 Author Share Posted January 21, 2018 Okay great.Ill work with the latest. Thanks for the quick response! Quote Link to comment Share on other sites More sharing options...
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