tebe Posted March 23, 2007 Share Posted March 23, 2007 As I can see in the schematic diagram, there are added-up signals of memory-select RAM1 and RAM2 in MARIA chip (a kind of logic multiplying). Does anybody connect separately RAM1 and RAM2 memory ? If so, what he got as a result ? Is it caused by the fact that at the time of developing, computer memories were too slow and therefore they had to be selected alternately ? And perhaps later the faster memory was choosen, so now these signals are added-up ? Quote Link to comment Share on other sites More sharing options...
supercat Posted March 23, 2007 Share Posted March 23, 2007 As I can see in the schematic diagram, there are added-up signals of memory-select RAM1 and RAM2 in MARIA chip (a kind of logic multiplying). Does anybody connect separately RAM1 and RAM2 memory ? If so, what he got as a result ? Is it caused by the fact that at the time of developing, computer memories were too slow and therefore they had to be selected alternately ? And perhaps later the faster memory was choosen, so now these signals are added-up ? What do you mean? The 7800 uses two 2Kbyte RAM chips. The /RAM1 signal is used to signal accesses to data within the first chip. The /RAM2 signal is used for accesses within the second. Quote Link to comment Share on other sites More sharing options...
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