lyourk@ihlpf.ATT.COM (Loran N. Yourk) (07/30/88)
I have an AT&T 6300 Plus computer with an AT&T 318H color monitor and would like any information on the AT&T 750 EGA card in such a system. I would like to know what modes are supported (CGA, HERC, EGA, AT&T, DEB, etc.,) and how well it works with software such as GEM and others. How is the speed of the card and does it use the "AT&T 16 bit bus" or is it just an 8 bit card? Does anyone know of any problems of using it in an AT&T 6300 Plus with UNIX(TM) software (I do not have the UNIX(TM) software yet but...)? I know TAXAN makes the 557 Gold EGA video card but how does it compare to the AT&T 750 card. Which would be better or are they the same? [I already have the video disabler chip and installation instructions for EGA cards in the 6300 Plus.] Loran Yourk ihlpf!lyourk (312) 510-6885
psc@lznv.ATT.COM (Paul S. R. Chisholm) (08/01/88)
< "Would you buy a used operating system from these guys?" > In article <5481@ihlpf.ATT.COM>, lyourk@ihlpf.ATT.COM (Loran N. Yourk) writes: > I have an AT&T 6300 Plus computer with an AT&T 318H color monitor > and would like any information on the AT&T 750 EGA card in such a > system. So far as I understand, it's a fairly vanilla EGA card, except that it does CGA (and AT&T 640x400) at 25MHz. It runs the 319 color monitor at the regular (not 25 MHz) EGA frequency, so you *can't* use the 318. (That's right, the 319 is not a multifrequency but a *bi*frequency monitor!) > How is the speed of the card and does it use the > "AT&T 16 bit bus" or is it just an 8 bit card? If it works in a 6310 or WGS system (and it does), it can't use the AT&T sixteen bit bus. > Does anyone know > of any problems of using it in an AT&T 6300 Plus with UNIX(TM) > software (I do not have the UNIX(TM) software yet but...)? This specific card, I don't know. There's not a lot of UNIX(R) software that understands EGAs. (Especially not UNIX software written for the 6300 PLUS, which can't take an EGA without minor surgery.) > I know TAXAN makes the 557 Gold EGA video card but how does it > compare to the AT&T 750 card. Which would be better or are they > the same? The STB Multires II will put EGA graphics (sixteen simultaneous colors out of a palette of sixteen instead of sixty-four) on your 318 monitor. The Taxan 557 Gold Card *should* do the same thing, but when I asked about a year ago, Taxan wouldn't confirm this. Note for old 6300 (not PLUS) owners: EGA cards are incompatible with the 384K memory expansion boards. So sorry. > [I already have the video disabler chip and installation > instructions for EGA cards in the 6300 Plus.] Good, you'll need them. > Loran Yourk, ihlpf!lyourk, (312) 510-6885 -Paul S. R. Chisholm, {ihnp4,cbosgd,allegra,rutgers}!mtune!lznv!psc AT&T Mail !psrchisholm, Internet psc@lznv.att.com I'm not speaking for my employer, I'm just speaking my mind. UNIX(R) is a registered trademark of AT&T.
rps@homxc.UUCP (R.SHARPLES) (08/01/88)
In article <1428@lznv.ATT.COM>, psc@lznv.ATT.COM (Paul S. R. Chisholm) writes: > In article <5481@ihlpf.ATT.COM>, lyourk@ihlpf.ATT.COM (Loran N. Yourk) writes: > > I have an AT&T 6300 Plus computer with an AT&T 318H color monitor > > and would like any information on the AT&T 750 EGA card in such a > > system. > > So far as I understand, it's a fairly vanilla EGA card, except that it > does CGA (and AT&T 640x400) at 25MHz. It runs the 319 color monitor at > the regular (not 25 MHz) EGA frequency, so you *can't* use the 318. > (That's right, the 319 is not a multifrequency but a *bi*frequency > monitor!) > > > I know TAXAN makes the 557 Gold EGA video card but how does it > > compare to the AT&T 750 card. Which would be better or are they > > the same? > > The STB Multires II will put EGA graphics (sixteen simultaneous colors > out of a palette of sixteen instead of sixty-four) on your 318 monitor. > The Taxan 557 Gold Card *should* do the same thing, but when I asked > about a year ago, Taxan wouldn't confirm this. > I have installed and used both the TAXAN 557 and the STB EGA Multires II. I highly recommend the STB. The Taxan supports Taxan's proprietary video mode which is 640x400x16 (though not compatible with the AT&T DEB). EGA is supported *only* through software emulation. Hence, any software that tries to write directly to the EGA hardware registers (virtually anything by Microsoft) will encounter problems on the Taxan card. The STB card on the other hand is fully register compatible with the EGA, supports a 640x400 text mode (so you get clearer text than EGA's 640x350 text mode) and will run 640x350x16 EGA graphics on an AT&T 318. The EGA image is smaller than full screen because 50 lines are blank due to the difference in horizontal resolutions. Russ Sharples homxc!rps NOTE: The above in NO WAY reflects the opinions of AT&T. These opinions are my own and the results of un-scientific and highly irregular analysis methods.
mcripps@mtuxo.att.com (XMP12-M.CRIPPS) (08/05/88)
In article <1428@lznv.ATT.COM>, psc@lznv.ATT.COM (Paul S. R. Chisholm) writes: > So far as I understand, it's a fairly vanilla EGA card, except that it > does CGA (and AT&T 640x400) at 25MHz. It runs the 319 color monitor at > the regular (not 25 MHz) EGA frequency, so you *can't* use the 318. ^^^^^^^^^^^^^^^^^^^^^^^^^^^ The above paragraph isn't quite right. First off, the VDC750 works with the 318 just fine. The VDC750 has a dip switch to select the scan rate. It will work with IBM compatible monitors and AT&T monitors (25Khz, not Mhz). Furthermore, the 319 does NOT run at the "regular" EGA frequency. The manual says clearly that the scan rate switch should NEVER be set to IBM when you are using an AT&T monitor. Lastly, the VDC750, while fairly vanilla by industry standards, does do a 640x400 16-color enhanced EGA mode (if you can find software to support it). Note that this mode is not DEB compatible. Mike Cripps AT&T Bell Labs Lincroft, NJ mtuxo!mcripps