The only difference between 424800 and 41S4800 ist that the S Type support CAS before RAS Refresh, like most DRAM Chips. If the RAM Controller dont supported this mode it is simply not used.
ALICE, like AGNUS is an old Design and only Support RAS Only Refresh, because DRAM of that time only support this mode, so both Chips can be used
Fastmem is different since Ramsey is more modern and use CAS before RAS Refresh since this mode is much more flexible and easier to implement.
ALICE, like AGNUS is an old Design and only Support RAS Only Refresh, because DRAM of that time only support this mode, so both Chips can be used
Fastmem is different since Ramsey is more modern and use CAS before RAS Refresh since this mode is much more flexible and easier to implement.