IBM 3151 User Manual page 117

Reference Information (emulation)
DRCS Character using the Whole Area of a Cell
When you want to design and load the 3151 enhanced type DRCS character, the
following different form for Sxbpl, Sxbp2, ... , Sxbpn should be used while using
the same DECDLD device control string.
ue1 ue2 •.. ue8 / mel me2 ... me8 / 1e1 1e2 ••• le8
A dot pattern is divided into 8-upper, 8-middle, and 8-lower columns as shown in
Figure 5-7. Each upper and middle columns consists of 6 dots (6 bits) and each
lower column consists of 4 dots (4 bits). Figure 5-7 also shows a musical note
character.
me1 me8
Figure 5-7. Column Defmition and Musical Note in DRCS Character Using the Whole
Area ofa CeU
The following shows how to convert a dot pattern of a musical note into the form
used in the DECDLD device control string.
Note: In this example, column 8 is not used.
5-8
User's Guide for the Cartridge to Emulate IBM and DEC Terminals