Previous Messages |
Posted By
 Litwr on 2016-01-16 11:46:35
| Re: Detect PAL/NTSC ?
There are exactly 618 bytes different in PAL and NTSC ROMs. :) |
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Posted By
 Majikeyric on 2016-01-16 05:11:44
 | Re: Detect PAL/NTSC ?
WOW ! at least 3 ways to detect the video system! great ! 
Thanks for the information  |
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Posted By
 Csabo on 2016-01-14 12:44:08
| Re: Detect PAL/NTSC ?
Yes, check bit 6 of $FF07 is sufficient, and by far the most common method actually used in code. The other suggestions above can also work. |
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Posted By
 gerliczer on 2016-01-14 11:15:51
| Re: Detect PAL/NTSC ?
Read KERNAL ROM location $FF80. If MSB is 1 the machine should be PAL, if 0 then NTSC. |
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Posted By
 crock on 2016-01-14 09:25:01
 | Re: Detect PAL/NTSC ?
Read location F33F in the kernal ROM. #$08 for PAL, #$48 for NTSC. |
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Posted By
 Majikeyric on 2016-01-14 09:17:08
 | Detect PAL/NTSC ?
Hi!
What is the easiest reliable method to detect the video system ?
Is checking bit 6 of $ff07 sufficient ?
Or counting the max vertical raster position ?
Thanks |
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