IIsi onboard ram replacement

[JC8080]

Good call on the 4mb, especially if you are using a video card so you don't need to worry about the shared VRAM.

I had forgotten about this thread and should have updated. I finally got my IIsi working this morning, the 8x chips harvested from 256kb SIMMs worked. I installed them a year ago and it didn't fix my problem, just today I found that two legs did not have continuity to their pads. I fixed those and the machine came back to life!

If I were to do it over, that would have been a good time to go @alectrona2988 's route and upgrade to 4mb.

 

[alectrona2988]

yeah, its better if you have a discrete video card because you'll be using more shared memory when using the onboard video. speaking of which whats a good cheap card for the IIsi? ...assuming its not gonna be cheap anyway, because apple hardware. lol

 

[JC8080]

yeah, its better if you have a discrete video card because you'll be using more shared memory when using the onboard video. speaking of which whats a good cheap card for the IIsi? ...assuming its not gonna be cheap anyway, because apple hardware. lol

I'm keeping my eye out for some sort of accelerated 24 bit card. I currently have an 8*24 (not GC). It works fine, but the redraw is slow in 24 bit mode. 8*24 cards come up for sale pretty often on eBay for not a lot of money, but I'd hold out for something better if you are in the market for a card.

I assume you have a NuBus adapter? I think almost any NuBus video card will work.

 

[alectrona2988]

i do have a nubus adapter, though i'm not sure which card to buy. is there anything with a video chipset and ethernet by any chance?

 

[JC8080]

I'm not aware of any sort of combination video/Ethernet card. There were some dual-PDS risers that would let you run two PDS cards, but I don't think there was a version with dual NuBus or PDS and NuBus.

The newest BlueSCSI has WiFi, that would be an option to get your machine connected without an actual Ethernet card, leaving space for a NuBus video card.

Have you overclocked to 25MHz yet?

 

[Fizzbinn]

E-machines made some combo Display+Ethernet NuBus cards, I have one in one of my IIsi's

• E-machines Colorlink SX/t (10Base-T, twisted pair version, the one I have)
• E-machines Colorlink SX/2 (10Baset-2, coax version)
• E-Machines Futura II LX (supports a daughter card that adds Ethernet, ...read even more unobtainium than above)