SRAM is Static Random Access Memory. This is a volatile type of memory that can be read from and written to many times. However, because it is volatile, all data is lost that is stored in RAM when the system power is down. ROM is Read Only Memory. This is a static memory that retains data even when system power goes down.
Users have to weigh the options.
The IBM PC-DOS 6.3 can be bundled with any Virtual Disk card or CPU card purchased. There are 2 versions available. The IDE Dlash Disk provides reliable solution in packages to fit conventional drive bay and with a very flexible capacity that you will not waste your money. The PM-7008 is a low cost half size virtual disk card. Up to 4 PM-7008 can be installed in a single computer.