Technical data

Memory access With the following operations, you can access local or global memory
areas using absolute addresses (see also Fig. 9-2).
Access to the local and
global area
You can acccess both the local and global areas:
•• local area (0000 to EFFF) and the part of the global memory or-
ganized in bytes (F000 to F3FF, FC00 to FFFF):
TNB, TNW, LIR, TIR
•• the part of the local area organized in words (0000 to E3FF and
E800 to EDFF):
LRW, TRW, LRD, TRD
Access only to the global area You can access the following parts of the global area:
•• the part of the global area organized in bytes (0000 to EFFF):
LY GB, LY GW, LY GD, TY GB, TY GW, TY GD, TSG
•• the part of the global area organized in words (0000 to EFFF):
LW GW, LW GD, TW GW, TW GD, TSG
Access to the page area You can access the following part of the page area:
•• the part of the global area organized in bytes (F400 to FBFF,
= dual-port RAM area):
LY CB, LY CW, LY CD, TY CB, TY CW, TY CD, TSC
•• the part of the global area organized in words (F400 to FBFF,
= dual-port RAM area):
LW CW, LW CD, TW CW, TW CD, TSC
Introduction
CPU 928B Programming Guide
9 - 6 C79000-B8576-C898-01