Techdisk (techdisk)'s status on Saturday, 19-Jul-14 19:56:56 UTC
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@scoot Wikipedia: "The Amiga 500 has a "trapdoor" slot on the underside for an upgrade of 512 kB of RAM. The extra RAM is classified as "fast" RAM, but is sometimes referred to as "slow" RAM since due to the design of the expansion bus it is actually on the chipset bus. Such upgrades usually include a battery-backed real-time clock. All versions of the A500 can have the additional RAM configured as Chip RAM by a simple hardware modification, which involves fitting a later model (8372A) Agnus chip. Likewise, all versions of the A500 can be upgraded to 2 MB Chip RAM by fitting the 8372B Agnus chip and adding additional memory."
