Tektronix TMS 440 SH-3 7708, Инструкция по эксплуатации

Страница: 50 / 100

Setting Up the Support
2–10
TMS 440 SH-3 7708 Microprocessor Support
Symbols
The TMS 440 support supplies one symbol table file. The SH-3_Ctrl file replaces
specific Control channel group values with symbolic values when Symbolic is
the radix for the channel group.
Symbol tables are generally not for use in timing or SH-3_T support disassembly.
Table 2–1 shows the name, bit pattern, and meaning for the symbols in the file
SH-3_Ctrl, which contains the Control-channel group symbol table.
Table 2–1: Control group symbol table definitions
Control group value
Symbol
L_CAS~ CASHH~
L_BS~ DL_CASD~ CASHL~
L_RAS~ DL_WER~ CASLH~
DL_RASD~ RD/WR~1 CASLL~
Meaning
”NORMAL READ”
1 1 1 1 1 0 1 X X X X
Memory read from SRAM/ROM/PCMCIA
”NORMAL WRITE”
1 1 1 1 1 0 0 X X X X
Memory write to SRAM/ROM/PCMCIA
”SDRAM COL ADDR”
1 1 1 0 X X X X X X X
SDRAM Column Address
”SDRAM DATA READ”
0 1 1 1 1 X 1 X X X X
SDRAM Data Read
”SDRAM COL ADDR & DATA
READ”
0 1 1 0 X X 1 X X X X
SDRAM Column Address access and
SDRAM Data Read done simultaneously
”SDRAM DATA WRITE”
0 1 1 1 1 X 0 X X X X
SDRAM Data Write
”SDRAM COL ADDR & DATA
WRITE”
0 1 1 0 X X 0 X X X X
SDRAM Column Address access and
SDRAM Data Write done simultaneously
”SDMR ROW ADDR”
1 0 X 1 1 1 0 1 1 1 1
SDRAM Mode Register Row Address
”SDRAM ROW ADDR”
1 0 X 1 X X 1 1 1 1 1
SDRAM Row Address
”PSRAM WRITE”
1 X 0 X 1 0 0 1 1 1 1
PSRAM Data Write
”EDO_DRAM / SDMR WRITE”
1 0 X X 1 1 0 1 1 1 0
EDO_DRAM Data Write or SDRAM Mode
Register Write
”DRAM / SDMR WRITE”
1 X 0 X 0 1 0 1 1 1 0
DRAM Data Write or SDRAM Mode
Register Write
”SDMR WRITE”
1 0 X 0 X 1 0 1 1 1 0
SDRAM Mode Register Write
”EDO_DRAM WRITE”
1 0 X X 1 1 0 X X X X
EDO_DRAM Data Write
”EDO_DRAM READ”
1 0 X X 1 1 1 X X X X
EDO_DRAM Data Read
”DRAM WRITE”
1 X 0 X 0 1 0 X X X X
DRAM Data Write
”PSRAM/DRAM READ”
1 X 0 X 0 1 1 X X X X
PSRAM Data Read or DRAM Data Read
”READ”
X X X X X X 1 X X X X
Read Cycle
”WRITE”
X X X X X X 0 X X X X
Write Cycle