Search found 256 matches
- Thu Mar 12, 2009 4:06 pm
- Forum: Video Display Processor
- Topic: HBlank Timings
- Replies: 163
- Views: 99669
Cool that you have possibility to test that !!! Perhaps it will be more precise to make a loop reading hv counter and when the interrupt occurs to know the last value readed? Because with this methode you have latency between the moment the h-int occurs and the moment the register is readed (308 MCL...
- Thu Mar 12, 2009 11:59 am
- Forum: Blabla
- Topic: Search genesis programmable card
- Replies: 7
- Views: 6126
- Thu Mar 12, 2009 7:19 am
- Forum: Blabla
- Topic: Search genesis programmable card
- Replies: 7
- Views: 6126
Search genesis programmable card
I'm searching sega genesis programmable card to do tests on real hardware.
I don't know where to buy it.
I found this website :
http://www.tototek.com/old.php
Does someone know if this is a good website?
Are they other website to buy such item?
Thank you
I don't know where to buy it.
I found this website :
http://www.tototek.com/old.php
Does someone know if this is a good website?
Are they other website to buy such item?
Thank you
- Wed Mar 11, 2009 8:47 am
- Forum: Video Display Processor
- Topic: HBlank Timings
- Replies: 163
- Views: 99669
- Tue Mar 10, 2009 6:14 pm
- Forum: Video Display Processor
- Topic: HBlank Timings
- Replies: 163
- Views: 99669
- Tue Mar 10, 2009 6:08 pm
- Forum: Video Display Processor
- Topic: HBlank Timings
- Replies: 163
- Views: 99669
- Tue Mar 10, 2009 3:09 pm
- Forum: Video Display Processor
- Topic: HBlank Timings
- Replies: 163
- Views: 99669
So with hblank cleared at H-int + 988 the game doesn't display correctly? The only difference is that for me this is the first bar that is wrongly displayed. Here is the reason : ROM:00000F54 HInt: ; DATA XREF: ROM:00000070o Start Length ROM:00000F54 tst.w ($FFFFF644).w 309 84 ROM:00000F58 beq.w loc...
- Tue Mar 10, 2009 2:31 pm
- Forum: Video Display Processor
- Topic: HBlank Timings
- Replies: 163
- Views: 99669
- Tue Mar 10, 2009 12:39 pm
- Forum: Video Display Processor
- Topic: HBlank Timings
- Replies: 163
- Views: 99669
I set this timings in my emulator. The delay between H-INT and HBLANK=0 give me problem with the blue bar of sonic 2. I already had this problem before. extract of my previous response to this topic : H-INT : 0 HBlankStart = H-INT + 130 MClks HBlankEnd = H-INT + 130 MClks + 860 Mclks So the delay be...
- Mon Mar 09, 2009 6:26 pm
- Forum: Video Display Processor
- Topic: HBlank Timings
- Replies: 163
- Views: 99669
- Mon Mar 09, 2009 4:55 pm
- Forum: Video Display Processor
- Topic: HBlank Timings
- Replies: 163
- Views: 99669
- Mon Mar 09, 2009 4:35 pm
- Forum: Video Display Processor
- Topic: HBlank Timings
- Replies: 163
- Views: 99669
- Mon Mar 09, 2009 10:54 am
- Forum: Video Display Processor
- Topic: HBlank Timings
- Replies: 163
- Views: 99669
I forgot to correct them. Now is ok. For V-INT interrupt, i calcul it happens juste before H-COUNTER = 0xFA. I explain : - According to Jorge Nuno Delay between H-INT and V-INT is 788 MCLKS. - According to my schema, delay between H-INT and H-BLANK END is 988 MCLKS - So V-INT happens 200 MCLKS befor...
- Mon Mar 09, 2009 10:05 am
- Forum: Video Display Processor
- Topic: HBlank Timings
- Replies: 163
- Views: 99669
- Sun Mar 08, 2009 11:22 pm
- Forum: Video Display Processor
- Topic: HBlank Timings
- Replies: 163
- Views: 99669
I made this schema to detail VDP timings in H40 mode : - 320 "H40 dots" (H40DCLKS) (Active Display) - 26,5 (correct to 26) "H40 dots" (H40DCLKS) (Back border, Back porch, Start HSync) - 30 "H32 dots" (H32DCLKS) (End HSync, Start front porch) - 43,5 (correct to 44) "H40 dots" (H40DCLKS) (End front po...