In some models especially that who doesnt have TTL-ANALOGUE RGB switch, in the same 9pin D-SUB connector the no8 horizontal sync and no9 vertical sync pins is different. What specific, the syncro input is at no7 composite-sync, without the separate vertical sync at pin 9.
Ok I ask my friend about this switch and I understood exactly what the cable to fix it. Its for an atari 1040ste, and he want to connect it to the same monitor who work his amiga.
Hi Chris. The above site with the pinout <<standard uses>> is totally confused.:dry:
If you disassemble for example a 1084SD1 (analogue and ttl circuits) and a 1084SD2 monitor (only analogue circuits without switch back), at the second type, you see cause the pin 8 and pin 9 is isolated. The only way to feed this monitor with sync (composite sync) is from pin 7.
On the other hand, in 1084SD1 you can feed with separate horizontal and vertical sync, at pin 7 and pin 9. Just like that operates the mine atari ste.