User guide

DS4830A User’s Guide
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22.3.4 – Command 03h – Password Match ................................................................................................................. 185
22.3.5 – Command 04h – Get Status .......................................................................................................................... 185
22.3.6 – Command 05h – Get Supported Commands ................................................................................................ 186
22.3.7 – Command 06h – Get Code Size .................................................................................................................... 186
22.3.8 – Command 07h – Get Data Size ..................................................................................................................... 186
22.3.9 – Command 08h – Get Loader Version ............................................................................................................ 186
22.3.10 – Command 09h – Get Utility ROM Version ................................................................................................... 186
22.3.11 – Command 10h – Load Code ........................................................................................................................ 187
22.3.12 – Command 11h – Load Data ......................................................................................................................... 187
22.3.13 – Command 20h – Dump Code ...................................................................................................................... 187
22.3.14 – Command 21h – Dump Data ....................................................................................................................... 188
22.3.15 – Command 30h – CRC Code ........................................................................................................................ 188
22.3.16 – Command 31h – CRC Data ......................................................................................................................... 188
22.3.17 – Command 40h – Verify Code ...................................................................................................................... 189
22.3.18 – Command 41h – Verify Data ....................................................................................................................... 189
22.3.19 – Command 50h – Load and Verify Code ...................................................................................................... 189
22.3.20 – Command 51h – Load and Verify Data ....................................................................................................... 189
22.3.21 – Command E0h – Code Page Erase ............................................................................................................ 189
SECTION 23 – PROGRAMMING ....................................................................................................................................... 190
23.1 – Addressing Modes ................................................................................................................................................ 190
23.2 – Prefixing Operations ............................................................................................................................................. 190
23.3 – Reading and Writing Registers ............................................................................................................................. 191
23.3.1 – Loading an 8-Bit Register with an Immediate Value ...................................................................................... 191
23.3.2 – Loading a 16-Bit Register with a 16-Bit Immediate Value ............................................................................. 191
23.3.3 – Moving Values Between Registers of the Same Size ................................................................................... 191
23.3.4 – Moving Values Between Registers of Different Sizes ................................................................................... 191
23.4 – Reading and Writing Register Bits ....................................................................................................................... 192
23.5 – Using the Arithmetic and Logic Unit ..................................................................................................................... 193
23.5.1 – Selecting the Active Accumulator .................................................................................................................. 193
23.5.2 – Enabling Auto-Increment and Auto-Decrement ............................................................................................. 193
23.5.3 – ALU Operations Using the Active Accumulator and a Source ...................................................................... 195
23.5.4 – ALU Operations Using Only the Active Accumulator ..................................................................................... 195
23.5.5 – ALU Bit Operations Using Only the Active Accumulator ............................................................................... 195
23.5.6 – Example: Adding Two 4-Byte Numbers Using Auto-Increment ..................................................................... 195
23.6 – Processor Status Flag Operations ....................................................................................................................... 195
23.6.1 – Sign Flag ........................................................................................................................................................ 195
23.6.2 – Zero Flag ........................................................................................................................................................ 196
23.6.3 – Equals Flag .................................................................................................................................................... 196
23.6.4 – Carry Flag ...................................................................................................................................................... 196
23.6.5 – Overflow Flag ................................................................................................................................................. 197
23.7 – Controlling Program Flow ..................................................................................................................................... 197
23.7.1 – Obtaining the Next Execution Address .......................................................................................................... 197