cassirer@batgirl.rtp.dg.com (Fred Cassirer) (01/02/91)
Can anyone tell me how to jumper this card to EGA? I've got it
installed and norton tells me it is a CGA card,
Video Mode: Text, 80x25 Color.
32 pin _. JP
| 12 J2
.----------------------------v----------------------------.
|DEGA :::::::::::::::: /\\\\/ :: `````` |
| `` ``````.---.
| [#####] .------------. [####] JP3 | 1 = On
| | | DM740518 | 2 = Off
| [#####] | Genoa | [######] [######] | 3 = On <== 6 pin dip
| | | 8711 HD74LS153P | 4 = On switch
| [#####] | GN006001-A | [######] [######] | 5 = On
| | | SN74LS244N DM74LS174N | 6 = Off
| [#####] `------------' [######] [######] `---'
| PA120L8ACNS HD74LS32P |
| [#####] .----------. .--------. [######] |
| | | |D27128D | HD74LS32P |
| [#####] |GN006002-A| | | [####] +.
| | | `--------' DM740518 |() <== Video
| [#####] |7016-0067 | [#########] +' Jack
| `----------' [######] HD74LS24SWP +.
| [#####] 244N |() <== Audio
`-------------. +' Jack
^ | +-.
| | | | <== DB9
Memory | |||||||||||||||||||||||||||||||||||||||| +-' Connector
| |||||||||||||||||||||||||||||||||||||||| |
726105-15 `-------------------------------------------'
M5M4464P
I bought it at a flea market for $20, I just assumed that it was jumpered
to EGA. The card is supposed to support both modes.
I have it installed in a DTK M/B with a Datatech 286 BIOS Ver 326 1986.
The setup program autoconfig's it as an EGA card but norton tells me it's
CGA. I have some programs that require EGA and they won't run so I'm
pretty sure it's in CGA mode.
I've messed around with the jumpers but was unable to get it to
do anything else. The current jumper settings are as
follows
JP
12 Where ++ indicates a jumper
.. ......
.+ ++.++.
.+ JP3
I'm using the card with an Amiga 1080 Monitor, I'm assuming that the
monitor will display upto a VGA resolution (it's 640x400).
I don't know who makes the card, but the word "MITSUBA" is stamped on
the back, although someone did say it was made by GENOA (although there
is no such company listed in the US according to information)
Any help would be greatly appreciated.
Thanx.
-Fred Cassirer
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
< Fred Cassirer ...rti!dg.rtp.com!cassirer >
< Data General Corporation Research Triangle Park, NC >
\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/thoger@solan.unit.no (Terje Th|gersen) (01/03/91)
In article <1991Jan2.024022.15289@dg-rtp.dg.com> cassirer@batgirl.rtp.dg.com (Fred Cassirer) writes: > Can anyone tell me how to jumper this card to EGA? I've got it > installed and norton tells me it is a CGA card, > Video Mode: Text, 80x25 Color. [very nice drawing deleted] All EGA cards I've come across have used the following switch-setting for EGA mode : 1 2 3 4 ON OFF OFF ON Switches 5-6 usually set autoswitch-mode etc, and can be left on. > I bought it at a flea market for $20, I just assumed that it was jumpered > to EGA. The card is supposed to support both modes. [deletions..] > I'm using the card with an Amiga 1080 Monitor, I'm assuming that the > monitor will display upto a VGA resolution (it's 640x400). Since it works in CGA mode, atleast it's a TTL monitor. The problem might be that CGA synchs at somewhere around 15-16 MHz, and EGA requires a monitor that can synch at [a higher frequency, I've forgotten what it is. Probably 18 or 25MHz or something :-)] Borrow a real EGA monitor, and try with it. > I don't know who makes the card, but the word "MITSUBA" is stamped on > the back, although someone did say it was made by GENOA (although there > is no such company listed in the US according to information) Oh, yes, they're there.. Look in BYTE or PC Magazine, they usually advertise their VGA-cards nowadays.. > Any help would be greatly appreciated. > Thanx. > -Fred Cassirer Good luck ! -Terje -- ____________________________________________________________________________ thoger@solan.unit.no | Institute of Physical Chemistry THOGER AT NORUNIT.BITNET | Div. of Computer Assisted Instrumental Analysis | Norwegian Institute of Technology