Newsgroup: it.comp.retrocomputing
Titolo: monitor per IIgs

Non ricordo chi era che tentava di far funzionare un vga con l'appleIIgs
tramite adattatore. Rileggiendo le FAQ di CSA2 ho scoperto che un vga
difficilmente puo' funzionare con un IIgs per via della frequenza
orizzontale che sul IIgs e' molto bassa. Per lo stesso motivo non
funzioneranno neanche' i monitor apple per mac sul IIgs. Ci vuole o un
monitor apple per IIgs o uno di quelli elencati qua sotto.
dalle FAQ di CSA2:
026- What are the specs and pin-out for the GS RGB monitor?
Max Resolution:    640 Horizontal dots x 200 Vertical dots/lines
Dot Pitch:         .37mm
CRT Size:          12"/  11.5" viewable
Video Bandwidth:   6.5MHz   (+/- 1.5DB)
Scanning Frequencies
               60Hz model            50Hz model
Horizontal:    15.734kHz             15.696kHz
Vertical:         60Hz                  50Hz
015- Which monitors and adapters can I use to replace my IIgs monitor?
     You should keep an eye out for any analog RGB monitor that can
horizontally sync
down to 15.75 kHz. These include:
     AppleColor RGB Monitor replacement (model A2M6014, the IIgs monitor)
     Commodore 1084 models and equivalents like the Magnavox Professional 80
     Sony CPD 1302 MultiSynch
     NEC MultiSync (original), MultiSync II, MultiSync 3D
     Commodore 1902 (although most of these only do digital RGB)
     Tandy CM-8 (not sure about model but it was used with the Coco3)
     Atari SC1224 (used with the ST series)
     Some TVs
     For example, I just tried a Sony CPD 1302 multisych monitor on a GS and
it works
perfectly; and, it has a .25 dot pixel! Very crisp picture. I used a
standard cable from a
Mac II (or you could check with Redmond Cable 
http://www.redcab.com/
 ).
     The NEC MultiSync II is another excellent monitor that will sync down
to 15 kHz.
(The MultiSync IIA won't work, though.)  A cable you can use is shown below:
NEC Multisync II Dsub-9     IIgs Dsub-15
1 Red                        2 Red
2 Green                      5 Green
3 Blue                       9 Blue
4 Horizontal Sync            3 Composite Sync
5 Vertical Sync (NC)*
6 Red GND                    1 Red GND
7 Green GND                  6 Green GND
8 Blue GND                  13 Blue GND
9 GND
*Note: DO NOT hook up Pin 5 (Vertical Sync); just chop it off. The NEC
Multisync II is capable of composite sync on its horizontal sync pin.
     The Atari SC1224 used with the ST is a ~15 kHz monitor. There were
several
versions, one by Goldstar, which appeared in one of the two case styles used
by
Atari over the years and bore the Atari logo. It works fine with the IIgs,
provided
an adapter cable is created. Redmond Cable can provide it.
     The Commodore Amiga 1084 monitors and Magnavox equivalents (e.g.
Professional 80, 8CM515) will work with the Apple IIgs. You will need a
special
Dsub-9 to Dsub-15 cable:
1084 model with Dsub-9      IIgs Dsub-15
(Analog mode)
1 GND                       13 GND (Blue)
3 Red                        2 Red
4 Green                      5 Green
5 Blue                       9 Blue
7 Composite Sync             3 Composite Sync
1084 model with DIN-6       IIgs Dsub-15
Analog Connector
1 Green                      5 Green
2 Horizontal Sync            3 Composite Sync
3 GND                        1, 6, 13 GND's
4 Red                        2 Red
5 Blue                       9 Blue
6 Vertical Sync (NC)*
*Note: DO NOT hook up Pin 6 (Vertical Sync). Just chop it off.
----------------------------
From: Ruud
     Here's a different approach: my Powermac 7500 is right next to my IIgs;
so, I
plugged its composite video output into the video-in port of the 7500,
started
Apple Video Player, and lo and behold, it is possible to use your 1024x768
multires RGB Powermac monitor as a IIgs monitor, in a pinch. Color is all
washed up, but mono is OK.
ciao,
Igor
--
"I really would like a chance to recreate the
Apple II fun someday." (Steven Wozniak)

Da un'occhiata sommaria al documento direi che l'uscita del IIgs ha
frequenze "televisive" PAL... come l'Amiga (a determinate risoluzioni).
Io lo darei anche via un monitor che fa al caso tuo... ma prima devo
trovarne un altro con cui sostituirlo...
Mi ricordi di dove sei?
--
Mindless
daniele(chiocciola)
mindless.com


ciao,
non ho capito bene se ti riferisci a me.
Veramente non sono io che cercavo il monitor ma non ricordo chi.
Comunque fra poco ne servira' uno anche a me :))
quindi potrebbe tornarmi comodo...
ciao,
Igor

Scusa Igor, avevo capito male allora... cmq sto cercando un monitor per la
mia Amiga (Commodore 1960, 1942, 1940, Microvitec), appena lo trovo do via
il Philips che ho (credo sia simil -Commodore 1084s)...
Ha l'ingresso Scart o din TTLRgb...
Ciao!
--
Mindless
daniele(chiocciola)
mindless.com


comunque se il Philips e' a colori a me interesserebbe molto. sto aspettando
che mi arrivi un appleIIgs e non ho il monitor...
Quindi tienimi presente.
ciao,
Igor

> comunque se il Philips e' a colori
Yes!
Volentieri! Se vedi qualcosa dei monitor che ti ho indicato fammi sapere che
appronto lo scambio! ;-)
--
Mindless
daniele(chiocciola)
mindless.com


d'accordo, daro' un'occhiata :)
ciao,
Igor

     it is possible to use your 1024x768
Questo era il metodo che volevo usare io per usare lo ZX+ col monitor
del PC! :P
	imbrogliatamente,
	   Cthulhu
-- 
       Ph'nglui mglw'nafh Cthulhu 
http://www.rlyeh.it/
 wgah'nagl fhtgan!
		     <cthulhu (at) rlyeh (dot) it>


cioe'?
Igor