The DSL service level used include the 640K
designed for each ANSI/CSA loops.
To run the program, you'll need 640K
of RAM on PCs and 2MB on Macs.
The full service requires an IBM-compatible computer with 640K
of available RAM and a Hewlett-Packard LaserJet (Series II or Series III) or a 100% compatible printer equipped with Center Piece Accounting & Tax Fonts.
As application programs get larger, they bump up against the 640K
memory limitation of DOS.
Capability: Expand is a library of Fortran subroutines that provide access to larger data files than MSDOS's 640K
memory limit allows.
The 1720 is a 16 MHz unit with a 2400-baud modem, 20 MB hard drive and 640K
memory expandable to 5 MB.