IBM PC (Model 5150) with Monochrome (MDA) Display --- All our Monochrome (MDA) configurations of the IBM PC Model 5150 are located here. Below is a 64kb configuration, with a clock speed of 4.77Mhz, using the original IBM PC Model 5150 ROM BIOS and MDA font ROM. For more control, use this [alternate configuration](/devices/pc/machine/5150/mda/64kb/debugger/) with Control Panel and Debugger. [IBM PC (Model 5150) with Monochrome Display and 64Kb](/devices/pc/machine/5150/mda/64kb/ "PCjs:ibm5150")