Subject: Re: [stella] VDELPx From: Christopher Tumber <christophertumber@xxxxxxxxxx> Date: Wed, 15 Jan 2003 00:11:35 -0500 |
>Can I trust z26 (2.) here? Yes. Running the following on my Supercharger: sta WSYNC lda #1 sta VDELP0 lda #255 sta GRP0 lda #0 sta VDELP0 lda #128+32+8+2 sta GRP0 lda #1 sta VDELP0 sta WSYNC sta WSYNC sta WSYNC sta WSYNC sta WSYNC sta WSYNC sta WSYNC sta WSYNC sta WSYNC sta WSYNC Displays nothing (In a standard kernal type loop, having set COLUP0 and positioned player0 with RESP0. And just to be sure, commenting out the VDELP0 references DOES produce a vertical bar) It's like a primitive double buffering... Wow. Chris... ---------------------------------------------------------------------------------------------- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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