CheckIt 1.10A Released in 1989 by TouchStone Software Corp. / DiagSoft For DOS CheckIt is a diagnostic tool for generic PC/XT/AT compatible computers. It can perform tests on RAM, hard disks, video cards, floppy disks, motherboard resources, and I/O devices. It has an easy to use menu interface but can also run tests non-interactively. It was followed up by the product WINCheckit. This version only requires 256K of ram under DOS 2.0. Archive includes one 5.25 360K floppy disk image.