You could also Read the EEPROM and see if there is any plain text identifiers in it.
William Stillwell Board Member - Inspiration labs, Inc. a 501c3 organization Board Member - West Central Florida Group, Inc. a 501c3 organization Board Member & Co-Founder - Byte Amusement Group // Free Play Florida Arcade & Pinball Show a 501c3 organization Board Member - Clearwater Amateur Radio Society On Fri, Dec 1, 2017 at 11:42 AM, mike stedman <[email protected]> wrote: > If I had to guess, the window on that chip indicates that it is probably a > UV-erasable EEPROM. It most likely shipped with a sticker to keep it from > being erased, which has now fallen off. I'd probably put a new sticker on > there to block the sunlight and keep it from getting wiped. > > On Fri, Dec 1, 2017 at 9:39 AM, Gary Satterfield <[email protected]> > wrote: > >> I also thought it strange that there is a small round window on the chip >> nearest the TI video controller. The date on the card is 1988 too. :D >> >> On Friday, 1 December 2017 03:53:51 UTC-6, Gregg Eshelman wrote: >>> >>> Combine a versatile Non-VGA Video Controller like that TI chip (it also >>> has a line drawing mode, I presume for vector monitors) with the Brooktree >>> 256 color palette RAMDAC, along with the male DE-9* connector and I'd say >>> you have some rather proprietary 8bit raster graphics display card. Most >>> likely not a vector display card with an 8 bit color raster RAMDAC. ;) >>> >>> Find the RAM chips and count up how much there is to get some idea of >>> the maximum possible resolutions it could support at 1, 4, 16 and 8 bit >>> color depths. >>> >>> It could be for a high resolution 1 bit monitor, but why use a DAC >>> that's made for color on it? I've done some searching and the only NuBus >>> video card I could find with a DE-9 is a Radius Full Page Display card, but >>> it has a female instead of a male connector. >>> >>> There were monitors made with a single DE-9 port and stitches to change >>> between TTL mono/color and analog modes so one monitor would work with any >>> PC video output, usually up to 800x600. Some also supported the oddball Mac >>> video modes which were slightly larger than 640x480 or 800x600. 832x624? I >>> still have such a monitor. IIRC it's the original model of NEC MultiSync. >>> No model designation, just MultiSync. Has a built in cooling fan and a worn >>> out CRT. >>> >>> Analog RGB video can be done using only 8 pins. That card is certainly >>> not doing any monitor identification through the connector. Might be fixed >>> resolution/colors/frequency. Might support several. Given the age of it, it >>> *might* use the 9 pin VGA pinout. Easy to find with google. >>> >>> http://www.icpdf.com/icpdf_datasheet_5_datasheet/TMS34061FNL >>> _pdf_1548294/#view >>> >>> *There is no such thing as a DB-9 connector. The B size is the 25 pin >>> used for Mac SCSI and PC parallel and 25 pin serial ports. The Mac video >>> connector before Apple adopted the VGA standard was a DA-15, also used for >>> PC joysticks. The 15 pin VGA port should properly be called a HDE-15 but >>> most people call it HD-15. Apple's 19 pin floppy drive port was only ever >>> used for that purpose and has no official letter size designation. The guy >>> who has the Big Mess-o-wires website makes a solid state floppy drive >>> replacement and had to reverse engineer that connector to have a large >>> batch of new ones made in China. Thus at one time he had the entire world's >>> supply of new Apple external floppy drive connectors in boxes on his back >>> porch. >>> >>> On Thursday, November 30, 2017, 10:24:43 PM MST, Gary Satterfield < >>> [email protected]> wrote: >>> >>> >>> After shuttering my Mac repair and consulting business several years >>> ago, I recently decided to dig through all the miscellaneous stuff I >>> collected over the years. The Nubus card you see in the attachments has me >>> scratching my head about what exactly it is. The only thing I am sure of is >>> that it is some sort of video card, judging by the Texas Instruments chip >>> (I Googled it to see what it was). The thing that throws me is the >>> video-out connection - it appears to be DIN-9, but only in reverse. >>> >>> Have a look at the pics and see if you can tell me what this weird thing >>> is! Please? Thank you kindly! >>> >> -- >> -- >> ----- >> You received this message because you are a member of the Vintage Macs >> group. >> The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our >> netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml >> To post to this group, send email to [email protected] >> To leave this group, send email to vintage-macs+unsubscribe@googl >> egroups.com >> For more options, visit this group at http://groups.google.com/group >> /vintage-macs >> >> Support for older Macs: http://lowendmac.com/services/ >> --- >> You received this message because you are subscribed to the Google Groups >> "Vintage Macs" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/d/optout. >> > > > > -- > Mike > http://ravuya.com > > -- > -- > ----- > You received this message because you are a member of the Vintage Macs > group. > The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our > netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml > To post to this group, send email to [email protected] > To leave this group, send email to vintage-macs+unsubscribe@ > googlegroups.com > For more options, visit this group at http://groups.google.com/ > group/vintage-macs > > Support for older Macs: http://lowendmac.com/services/ > --- > You received this message because you are subscribed to the Google Groups > "Vintage Macs" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- -- ----- You received this message because you are a member of the Vintage Macs group. The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] To leave this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/vintage-macs Support for older Macs: http://lowendmac.com/services/ --- You received this message because you are subscribed to the Google Groups "Vintage Macs" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
