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psikyo/psikyo.cpp: Fixed video timings in comments for Tengai and Strikers 1945. (#11102)

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buffi 2023-04-15 00:30:35 +02:00 committed by GitHub
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1 changed files with 8 additions and 6 deletions
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src/mame/psikyo/psikyo.cpp
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@ -30,8 +30,7 @@ Tengai (J) 1996 SH404 SH404 has MCU, ymf278-b for sound
To Do:
- All games uses PORT_VBLANK and legacy screen parameters (which is already
bad per-se), with also naive and unlikely measurements (i.e. exactly 59.30
or 59.90 Hz).
bad per-se), with also naive and unlikely measurements (i.e. exactly 59.30).
The most blunt examples of something being wrong with timings are with
Gunbird and Tengai: they both have FOUR frames of input lag, the real thing
doesn't sport anything like that.
@ -1623,7 +1622,11 @@ OSC: 16.000MHz
14.3181MHz
33.8688MHz (YMF)
4.000MHz (PIC)
SYNCS: HSync 15.2183kHz, VSync 59.9229Hz
SYNCS: HSync 15.700kHz, VSync 59.923Hz
HSync most likely derived from 14.3181MHz OSC (divided by 912)
262 lines per frame consisting of:
- Visible lines: 224
- VBlank lines: 38 (Front/Back porch: 15 lines, VSync pulse: 8 lines)
1-U59 security (PIC16C57; not dumped)
***************************************************************************/
@ -1752,9 +1755,8 @@ OSC: 16.000MHz
SYNCS: HSync 15.700kHz, VSync 59.923Hz
HSync most likely derived from 14.3181MHz OSC (divided by 912)
262 lines per frame consisting of:
- Visible lines: 223
- Vertical Back/Front Porch: 16 lines each
- VSync pulse: 7 lines
- Visible lines: 224
- VBlank lines: 38 (Front/Back porch: 15 lines, VSync pulse: 8 lines)
Chips: PS2001B
PS3103
PS3204