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Old 26 December 2012, 20:08   #11
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Join Date: Aug 2004
Posts: 2,939
Here's a little test program for HSYNC/CIA-B TOD. If you can find someone with an NTSC Amiga and NTSC genlock, and someone else with a PAL Amiga and PAL genlock to test it, that could solve the "mystery". (Screenshots taken using the you just uploaded.)

Edit: since the test sets COLOR00 which may be transparent (i.e. the genlock video shows through wherever colour 0 is), the user would need to set their genlock to "Amiga only" video mode. A less hastily cobbled-together test might fill the screen with another colour and change that palette register instead.

I've attached another disk image which boots to an interlaced Workbench; that may or may not be preferable/easier to use with a genlock.

Edit 2: Do you know any programs which use the CIA-B TOD registers?
Attached Thumbnails
Click image for larger version

Name:	NoGenlock.png
Views:	258
Size:	9.8 KB
ID:	33577   Click image for larger version

Name:	WithGenlock.png
Views:	240
Size:	9.1 KB
ID:	33578  
Attached Files
File Type: zip (2.6 KB, 60 views)
File Type: s ciab_tod_test.s (1.4 KB, 62 views)
File Type: zip (2.8 KB, 52 views)

Last edited by mark_k; 28 July 2014 at 12:03.
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