picture and info wanted: cirrus vga card with 32pieces of 8kb dram \ VOGONS

picture and info wanted: cirrus vga card with 32pieces of 8kb dram

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First post, by noshutdown

Posted on 2025-11-07, 06:31

noshutdown Offline

Rank Oldbie

Rank: Oldbie
Posts: 1340
Joined: 2010-07-23, 17:04
Location: China

The attachment cirrus_logic_cl-gd510_520a_long_card.jpg is no longer available

this picture was saved from dosdays.co.uk, but its small and blurry, and i really wanna know more info about it.
i also remember someone in china showed me a trident 8900d or 8900dr with 32pieces of 32kb dram, but can't find the picture now...

Reply 1 of 1, by bakemono

Posted on 2025-11-07, 15:23

bakemono Offline

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Rank: Oldbie
Posts: 870
Joined: 2018-01-15, 06:56

there was a time when 256kbit DRAM chips were in short supply and it was cheaper to use 64kbit ones. Or the manufacturer just had a large inventory of them.

The Cirrus Logic chipset had a configurable interleave between memory cycles devoted to video output and cycles for CPU access, depending on the speed of memory connected.

GBAJAM 2024 submission on itch: https://90soft90.itch.io/wreckage

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