Is it possible or not to get a EMS/LIM 4.0, Boca 8-bit (XT) memory expansion card to work in a 286 machine that has an 8-bit slot? I tried this without success on my 286 machine. There are eight possible address combinations. For @D000 or @E000, the possible addresses are 208, 218, 258, and 268 using the BREMM.SYS driver and coordinating with the board switch bank. According to CHECKIT there is a conflict @DC00 so that sort of eliminates the @D000 address range. However, @E000 to @F000 is wide open. When I boot the CONFIG.SYS, the driver will not trigger Frames at the given address using, for example DEVICE=C:\BOCA\BREMM @E000 208 . Of course, I tried the other addresses. I have pulled the board but before I consider a total loss, I wanted the forum’s feedback. OS is MSDOS 6.22.