A2320 adjustment/manual

radzik · 03 February 2010, 15:15

I have A2320 (Amber) scandoubler, but I can't find manual for it (links don't work), can someone describe this picture http://www.amiga-hardware.com/downlo...amber_diag.jpg? It's possible to setup it to have 60 Hz output (for LCD displays)?

Jope · 03 February 2010, 17:50

Select a 60Hz screenmode.

alexh · 03 February 2010, 18:47

What Jope said.

In Workbench drag the NTSC icon from Storage/Monitors to DEVS/Monitors and then use Prefs/ScreenMode to select an NTSC (60Hz) mode.

You'll probably have to add NTSC tooltype to all of your WHDload slaves too (is there a global option for this??)

If you have kickstart 3.1 you can switch to 60Hz in the Early Startup menu. Hold down both mouse buttons during a soft reboot and then press SPACE.

radzik · 03 February 2010, 20:33

Brilliant.

But if it can be solved with hardware A2320?

Jope · 03 February 2010, 21:44

No. The A2320 doesn't get itself involved with the vertical refresh, only the horizontal.

You could permanently set the PAL/NTSC select pin of your Agnus, though.

radzik · 03 February 2010, 22:43

Which pin?

rkauer · 04 February 2010, 00:54

Depends on which big box Amiga you have.

For A2000 there is not exactly a jumper, but a solder jumper. On A3000 & 4000 there jumpers to select PAL or NTSC ready on board.

radzik · 04 February 2010, 02:05

I have A2000 rev.6, so where I can find it?

rkauer · 04 February 2010, 03:54

Near Agnus.

Jope · 04 February 2010, 07:54

J102 This jumper if available configures the A2000 for NTSC, or PAL operation. Agnus 8370, 8372A, 8372AB for example, support switching between NTSC and PAL. Rev 6.4 motherboards and possibly later revisions come with an 8375 Agnus by default which does not support switching. It was made in in separate versions for PAL and NTSC

I can't remember off hand which setting was which, but obviously the opposite of what you have in there now. If it's bridged, suck out any solder on the jumper pad and cut it if it's still closed. If it's open, bridge it with a blob of solder. :-)

radzik · 04 February 2010, 12:30

Thanks. Do you know if that trick works with Mini Mega 2MB Chip (new Agnus 8375)?

alexh · 04 February 2010, 13:05

No it doesn't.

The software methods described above should be good enough.

03 February 2010, 15:15	#1
radzik Registered User Join Date: Dec 2008 Location: Poznan / Poland Posts: 119	A2320 adjustment/manual I have A2320 (Amber) scandoubler, but I can't find manual for it (links don't work), can someone describe this picture http://www.amiga-hardware.com/downlo...amber_diag.jpg? It's possible to setup it to have 60 Hz output (for LCD displays)?

04 February 2010, 07:54	#10
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,861	J102 This jumper if available configures the A2000 for NTSC, or PAL operation. Agnus 8370, 8372A, 8372AB for example, support switching between NTSC and PAL. Rev 6.4 motherboards and possibly later revisions come with an 8375 Agnus by default which does not support switching. It was made in in separate versions for PAL and NTSC I can't remember off hand which setting was which, but obviously the opposite of what you have in there now. If it's bridged, suck out any solder on the jumper pad and cut it if it's still closed. If it's open, bridge it with a blob of solder. :-) Last edited by Jope; 04 February 2010 at 13:22.

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03 February 2010, 17:50	#2
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,861	Select a 60Hz screenmode.

03 February 2010, 18:47	#3
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,335	What Jope said. In Workbench drag the NTSC icon from Storage/Monitors to DEVS/Monitors and then use Prefs/ScreenMode to select an NTSC (60Hz) mode. You'll probably have to add NTSC tooltype to all of your WHDload slaves too (is there a global option for this??) If you have kickstart 3.1 you can switch to 60Hz in the Early Startup menu. Hold down both mouse buttons during a soft reboot and then press SPACE.

03 February 2010, 20:33	#4
radzik Registered User Join Date: Dec 2008 Location: Poznan / Poland Posts: 119	Brilliant. But if it can be solved with hardware A2320?

03 February 2010, 21:44	#5
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,861	No. The A2320 doesn't get itself involved with the vertical refresh, only the horizontal. You could permanently set the PAL/NTSC select pin of your Agnus, though.

03 February 2010, 22:43	#6
radzik Registered User Join Date: Dec 2008 Location: Poznan / Poland Posts: 119	Which pin?

04 February 2010, 00:54	#7
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	Depends on which big box Amiga you have. For A2000 there is not exactly a jumper, but a solder jumper. On A3000 & 4000 there jumpers to select PAL or NTSC ready on board.

04 February 2010, 02:05	#8
radzik Registered User Join Date: Dec 2008 Location: Poznan / Poland Posts: 119	I have A2000 rev.6, so where I can find it?

04 February 2010, 03:54	#9
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	Near Agnus.

04 February 2010, 12:30	#11
radzik Registered User Join Date: Dec 2008 Location: Poznan / Poland Posts: 119	Thanks. Do you know if that trick works with Mini Mega 2MB Chip (new Agnus 8375)?

04 February 2010, 13:05	#12
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,335	No it doesn't. The software methods described above should be good enough.

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