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Maybe Scrolly?

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26 Jun, 9 tweets, 4 min read

today I picked up some VESA Local Bus graphics cards. it's time to test them out and benchmark them!

first I'll start with a generic Trident 16-bit ISA cards for comparison.

oh almost forgot: how about the Graphics Gremlin? it's very very s l o w

a SIIG with the CL-GD5429 chip.

this S3 805 didn't work at first. but after reseating the RAM chips, it worked fine.

the Tseng Labs ET4000AX didn't work at all. maybe it's this broken resistor array

the Tseng Labs ET4000W32 is quite speedy!

now for the last card, the S3 Trio32. it's a bit slower than I expected.

the software is TOPBENCH.

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28 Jun

i've been thinking about the Surfside condo collapse. 🧵

i'm a bit hesitant to write about it, mostly because i keep thinking about the folks trapped in the rubble. it makes an engineering discussion seem a bit cold-hearted.

but engineering affects all of our lives -- which, on a daily basis, literally depend on engineers doing a good job. most people take this for granted. it's probably why a catastrophic failure like this can affect us so deeply.

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27 Jun

a while ago i picked up this old DAT drive for a very good price. let's see if i can get it working!

it is the Mitsumi DK4-SS4001, a SCSI DAT drive.

took out a bunch of screws and now we're in! DAT drives use a helical scanning system just like an old VCR, but in miniature. the round thing in the middle is the rotating head.

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26 Jun

another day, another trip to Excess Solutions in San Jose!

oooh a VESA bus multi IO card!

this multi IO card comes with "DATA SECURITY & VIRUS PROTECT" 😂

Read 14 tweets

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19 Jun

let's try and get this paper tape reader working. I have no control board for it so this is going to be interesting

here's a 4-phase stepper motor driver from another project. I actually got this working a while back, so I can move the tape precisely in either direction.