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This commit is contained in:
Jasmine Iwanek
2023-01-06 15:36:05 -05:00
parent 95cf08611c
commit a40630ba63
311 changed files with 6218 additions and 6062 deletions
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70
src/video/video.c
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@@ -1,52 +1,52 @@
/*
* 86Box A hypervisor and IBM PC system emulator that specializes in
* running old operating systems and software designed for IBM
* PC systems and compatibles from 1981 through fairly recent
* system designs based on the PCI bus.
* 86Box A hypervisor and IBM PC system emulator that specializes in
* running old operating systems and software designed for IBM
* PC systems and compatibles from 1981 through fairly recent
* system designs based on the PCI bus.
*
* This file is part of the 86Box distribution.
* This file is part of the 86Box distribution.
*
* Main video-rendering module.
* Main video-rendering module.
*
* Video timing settings -
* Video timing settings -
*
* 8-bit - 1mb/sec
* B = 8 ISA clocks
* W = 16 ISA clocks
* L = 32 ISA clocks
* 8-bit - 1mb/sec
* B = 8 ISA clocks
* W = 16 ISA clocks
* L = 32 ISA clocks
*
* Slow 16-bit - 2mb/sec
* B = 6 ISA clocks
* W = 8 ISA clocks
* L = 16 ISA clocks
* Slow 16-bit - 2mb/sec
* B = 6 ISA clocks
* W = 8 ISA clocks
* L = 16 ISA clocks
*
* Fast 16-bit - 4mb/sec
* B = 3 ISA clocks
* W = 3 ISA clocks
* L = 6 ISA clocks
* Fast 16-bit - 4mb/sec
* B = 3 ISA clocks
* W = 3 ISA clocks
* L = 6 ISA clocks
*
* Slow VLB/PCI - 8mb/sec (ish)
* B = 4 bus clocks
* W = 8 bus clocks
* L = 16 bus clocks
* Slow VLB/PCI - 8mb/sec (ish)
* B = 4 bus clocks
* W = 8 bus clocks
* L = 16 bus clocks
*
* Mid VLB/PCI -
* B = 4 bus clocks
* W = 5 bus clocks
* L = 10 bus clocks
* Mid VLB/PCI -
* B = 4 bus clocks
* W = 5 bus clocks
* L = 10 bus clocks
*
* Fast VLB/PCI -
* B = 3 bus clocks
* W = 3 bus clocks
* L = 4 bus clocks
* Fast VLB/PCI -
* B = 3 bus clocks
* W = 3 bus clocks
* L = 4 bus clocks
*
*
*
* Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
* Miran Grca, <mgrca8@gmail.com>
* Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
* Miran Grca, <mgrca8@gmail.com>
*
* Copyright 2008-2019 Sarah Walker.
* Copyright 2016-2019 Miran Grca.
* Copyright 2008-2019 Sarah Walker.
* Copyright 2016-2019 Miran Grca.
*/
#include <stdatomic.h>
#define PNG_DEBUG 0