Re: [hatari-devel] Blitter emulation corner case

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To: hatari-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [hatari-devel] Blitter emulation corner case
From: "markus@xxxxxxx" <markus@xxxxxxx>
Date: Sat, 20 May 2017 11:36:53 +0200

Am 20.05.2017 um 10:58 schrieb Nicolas Pomarède:

restarting the blitter in non hog mode this way is perfectly valid ; in asm, most routine will use the "TAS" instruction to do this and the atari doc does the same in their blitter examples.

The Atari sample code either uses TAS (in the newer docs) or BSET (the older example). Both _write_ to the LINE_NUM[BUSY] bit while Christian's code only reads it.

Not sure if that really makes a huge difference, though.

Follow-Ups:
- Re: [hatari-devel] Blitter emulation corner case
  - From: Christian Zietz
- Re: [hatari-devel] Blitter emulation corner case
  - From: Douglas Little

References:
- Re: [hatari-devel] Blitter emulation corner case
  - From: "Markus Fröschle"
- Re: [hatari-devel] Blitter emulation corner case
  - From: Roger Burrows
- Re: [hatari-devel] Blitter emulation corner case
  - From: Christian Zietz
- Re: [hatari-devel] Blitter emulation corner case
  - From: Roger Burrows
- Re: [hatari-devel] Blitter emulation corner case
  - From: Nicolas Pomarède
- Re: [hatari-devel] Blitter emulation corner case
  - From: Christian Zietz
- Re: [hatari-devel] Blitter emulation corner case
  - From: markus@xxxxxxx
- Re: [hatari-devel] Blitter emulation corner case
  - From: Nicolas Pomarède

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