wvc@lodge.dec.com (Bill Valentine-Cooper) (04/17/91)
In article <71575@eerie.acsu.Buffalo.EDU>, v104nmym@ubvmsb.cc.buffalo.edu (Sherman T Chan) writes... >I have a COCO2 that I'd like to upgrade to 64K (Or more, if there are any shoehorn projects arond) >but I don't know the chip type required. And after I get the >chips, do I simply plug them in, or are that jumpers that have >to be installed, as I have noticed one of the seats for a RAM >chip is unsocketed. >Also, is extended basic required to access more than 16k of ram? > >Thanks in advance. > >Sherm Time for yet another magazine referral: You should pick up a copy of Rainbow Magazine, published by Falsoft. It is still going strong after 10 years, and supports all CoCos. There are several columns which frequently discuss the memory upgrade you're describing. I may be getting senile, but I seem to remember that CoCo IIs were shipped with 64K. Regarding Extended Basic and RAM access, all three versions of Basic (Standard, Extended, and Disk) can address only up to 32K on the CoCo II. They all use varying amounts of low memory for buffers and other such dynamic stuff, so the amount you see with the PRINT MEM command will always be under 32K. Any use of memory beyond the 32K limit requires clever machine language programs or extentions to Basic. Have a good day! VC
v104nmym@ubvmsb.cc.buffalo.edu (Sherman T Chan) (04/18/91)
I have a COCO2 that I'd like to upgrade to 64K (Or more, if there are any shoehorn projects arond) but I don't know the chip type required. And after I get the chips, do I simply plug them in, or are that jumpers that have to be installed, as I have noticed one of the seats for a RAM chip is unsocketed. Also, is extended basic required to access more than 16k of ram? Thanks in advance. Sherm