Basic Data Types
The basic data types for an assembly program in the intel 80xxx world consist of
DB - Byte (8-bits)
DW - Word (16-bits)
DD - Double-Word (32-bits)
DQ - Quad-Word (64-bits)
DT - Ten-Byte Packed Decimal - used with the FPU mostly
Structures (p.150) are supported and can be referenced in your book along with arrays (p. 141), strings (p.137), and other common data models in chapter four.