#avr Logs

Mar 10 2019

01:08 AM rue_mohr: http://ruemohr.org/~ircjunk/projects/micro7seg/slide.htm
01:13 AM rue_mohr: t13 and charlieplexed 7 segment display
03:10 AM rue_mohr: polprog, thanks, I should code up the usb interface for it
03:11 AM polprog: https://ibb.co/1ZVrD3T
03:11 AM polprog: maybe you know whats this connector on a scsi card?
03:11 AM polprog: got one PCI and two ISA cards
03:11 AM rue_mohr: compaq
03:11 AM polprog: yeah
03:11 AM polprog: compaq
03:11 AM rue_mohr: video
03:12 AM rue_mohr: the conn is for a vid extension i think
03:12 AM polprog: on a scsi card?
03:12 AM rue_mohr: the one under is scsi
03:13 AM rue_mohr: I dont think thats scisi on the one your holding
03:13 AM polprog: looks like a scsi conn
03:13 AM rue_mohr: mhm
03:13 AM rue_mohr: check the ground pins
03:14 AM rue_mohr: I suspect you will find its not scsi
03:14 AM polprog: interesting
03:14 AM polprog: compaq qvision
03:14 AM rue_mohr: that rings a bell
03:15 AM rue_mohr: The connector at the top is a VESA Advanced Feature Connector (AFC). The VESA AFC was meant to replace the older VESA 26-pin feature connector. (info by Max)
03:15 AM rue_mohr: likeley they are the only people who did it
03:16 AM polprog: thanks. thats fascinating
03:17 AM rue_mohr: ... I'm not aware of anythnig that used the feature connector...
03:20 AM rue_mohr: https://www.researchgate.net/profile/Kangmin_Lee/publication/228759637/figure/fig2/AS:669994924912641@1536750646051/The-structure-of-VGA-Graphic-Card.png
03:28 AM rue_mohr: mpeg decoders, huh
03:33 AM polprog: https://ibb.co/ygvYr8q
03:33 AM polprog: there is bird shit on the floppy conn footprint
03:33 AM rue_mohr: grubby, but scsi
03:34 AM rue_mohr: and the fdc is missing
03:34 AM polprog: yeah
03:34 AM rue_mohr: how much it cost ya?
03:35 AM rue_mohr: and the scsi bios isn't with it
03:35 AM polprog: $7 for 3 and a VGA cable as an extra
03:35 AM polprog: what bios
03:35 AM rue_mohr: hmm
03:35 AM rue_mohr: the rom socket
03:36 AM rue_mohr: is for a scsi bios extension
03:36 AM rue_mohr: er, lack of rom socket
03:36 AM rue_mohr: the *would be* socket
03:36 AM polprog: no the traces from u2 go to the floppy con
03:36 AM polprog: i dont think its a place for a rom
03:36 AM rue_mohr: and missing 74ls373
03:36 AM rue_mohr: that big unpopulated dip
03:36 AM polprog: ah that
03:37 AM rue_mohr: and the soic beside it
03:37 AM polprog: hmm yeah
03:38 AM polprog: that doesnt look like a failure - i dont think someone unsoldered that
03:38 AM rue_mohr: no its the address latch for the eprom
03:39 AM rue_mohr: x86 multiplexes address and data for extra slowness
06:47 AM gsi__ is now known as gsi_
07:50 AM polprog: rue_mohr: can i run a SCSI card with nothing connected to it?
07:50 AM polprog: ie no disks, and the card hasn't got termination resistor networks populated
12:20 PM rue_bed2: wont matter if its not connected to anyting
02:34 PM rue_mohr: --
10:15 PM [1]MrMobius is now known as MrMobius