[Coco] How much memory

jdaggett at gate.net jdaggett at gate.net
Fri Nov 26 23:52:13 EST 2010


If my memory serves me correct OS9 can access 2 Meg RAM. SECB can only access 512K

Both are limited by the GIME Chip which only accesses 512K. There are schemes that have 
expanded memory but only in banks of 512K


On 26 Nov 2010 at 20:48, Becker, Gary wrote:

> I was just wondering, how much memory could a CoCo3 realistically use. BASIC can only address 512K. NitrOS-9 can address a lot more, but it has a fixed amount of system resources and after they are used, any additional RAM is wasted. A RAM drive is a good way to utilize a bunch of additional RAM. Compiling C programs from a RAM drive is definately a lot faster than from a HDD. Which of these three options is better?
> 1 1.5 Meg of memory that is able to run at 25 MHz.
> 2 512K at 25 MHz and 8 or more Meg for a RAM Drive that can be accessed at 3.5 MHz or less.
> 3 Eight or more Meg of RAM that can be accessed at 3.5 MHz or less.
> Please limit to these three options.
> Gary
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