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One-Line Assembler/ Disassembler
4-3
4
❏ No conditional assembly is used.
❏ Several symbols recognized by the resident assembler are not
included in the PPCBug one-line assembler character set.
❏ Depending on the context, the ampersand (&) has multiple
meanings to the resident assembler (refer to Addressing Modes
on page 4-8). The & is either the AND logical operator or a
decimal number prefix.
❏ Depending on the context, the asterisk (*) has multiple
meanings to the resident assembler (refer to Addressing Modes
on page 4-8). The * is either the multiplication operator or the
current value of the program counter.
Although functional differences exist between the two assemblers,
the PPCBug one-line assembler is a true subset of the resident
assembler. The format and syntax used with the PPCBug one-line
assembler are acceptable to the resident assembler except as
described above.
Source Program Coding
A source program is a sequence of source statements arranged in a
logical way to perform a predetermined task. Each source
statement occupies a line and must be either an executable
instruction, or a WORD assembler directive. Each source statement
follows a consistent source line format.
Source Line Format
Each source statement is a combination of operation and, as
required, operand fields. Line numbers, labels, and comments are
not used.
- Firmware Package 1
- User’s Manual 1
- Parts 1 & 2 1
- Restricted Rights Legend 2
- Contents 7
- List of Tables 15
- List of Figures 17
- 1General Information 19
- PPCBug Implementation 20
- Memory Requirements 21
- Start-up 22
- General Information 23
- Auto Boot 31
- Length Contents Description 33
- Sample ROMboot Routine 34
- Network Auto Boot 36
- Restarting the System 37
- Board Failure 39
- MPU Clock Speed Calculation 40
- Disk I/O Support 41
- Device Probe 42
- Disk I/O Error Codes 45
- Network I/O Support 46
- RARP and ARP Modules 48
- BOOTP Module 48
- TFTP Module 48
- Network Boot Control Module 48
- Network I/O Error Codes 49
- Data and Address Sizes 51
- Byte Ordering 52
- 2Using the Debugger 53
- Command Arguments 54
- ADDR Formats 56
- Using the Debugger 57
- Command Options 58
- Control Characters 59
- Exception Vectors 62
- MPU Registers 62
- Context Switching 63
- Floating Point Support 65
- Single Precision Real 66
- Double Precision Real 66
- Scientific Notation 67
- 3Debugger Commands 69
- Debugger Commands 70
- Command Description 70
- AS - One-Line Assembler 72
- BC - Block of Memory Compare 73
- BF - Block of Memory Fill 75
- H Half-word 78
- $000FFFFF 79
- BM - Block of Memory Move 80
- BR - Breakpoint Insert 83
- NOBR - Breakpoint Delete 83
- BS - Block of Memory Search 85
- BV - Block of Memory Verify 90
- CM - Concurrent Mode 93
- NOCM - No Concurrent Mode 93
- A List all supported devices 94
- CS - Checksum 101
- Examples 102
- Read Data = 01000013 103
- PPC1-Bug> 103
- DC - Data Conversion 105
- DMA - Block of Memory Move 108
- Effective address: C1000000 110
- Effective address: C1FFFFFF 110
- D32 block transfer cycles 112
- DS - One-Line Disassembler 116
- DU - Dump S-Records 117
- ECHO - Echo String 119
- ENV - Set Environment 121
- PPC1-Bug>fork 1 10000 126
- PPC1-Bug>forkwr 1 127
- More stuff in between 138
- GN - Go to Next Instruction 142
- GO - Go Execute User Program 144
- Set a breakpoint 148
- HE - Help 150
- IDLE - Idle Master MPU 154
- IOC - I/O Control for Disk 155
- IOI - I/O Inquiry 158
- T Format a disk track 163
- D Format the entire disk 163
- Example 2: 174
- LO - Load S-Records from Host 176
- MA - Macro Define/Display 182
- NOMA - Macro Delete 182
- M=MD 3000 <Return> 183
- M=GO \0 <Return> 183
- M= <Return> 183
- MAE - Macro Edit 185
- MAL - Enable Macro Listing 187
- NOMAL - Disable Macro Listing 187
- MAR - Load Macros 188
- MAW - Save Macros 190
- MD, MDS - Memory Display 192
- Example 5: 194
- Example 6: 194
- Example 7: 195
- Example 8: 195
- MENU - System Menu 196
- MM - Memory Modify 197
- MMD - Memory Map Diagnostic 201
- MS - Memory Set 203
- MW - Memory Write 204
- Example 3: 205
- NAB - Network Auto Boot 206
- NAP - NAP MPU 207
- NIOC - Network I/O Control 214
- NIOP - Network I/O Physical 220
- <Return> 229
- NPING - Network Ping 231
- PPC1-Bug>OF <Return> 235
- PA - Printer Attach 236
- NOPA - Printer Detach 236
- Command Input 238
- Arguments 238
- Loading: Operating System 244
- Partition Not Bootable 244
- PF - Port Format 246
- NOPF - Port Detach 246
- N Disabled 248
- PFLASH - Program FLASH Memory 251
- RB - ROMboot Enable 256
- NORB - ROMboot Disable 256
- RD - Register Display 258
- REMOTE - Remote 264
- RESET - Cold/Warm Reset 265
- RL - Read Loop 267
- RM - Register Modify 268
- RS - Register Set 271
- RUN - MPU Execution/Status 273
- SD - Switch Directories 275
- SET - Set Time and Date 276
- SROM - SROM Examine/Modify 277
- Examples: 278
- SYM - Symbol Table Attach 279
- NOSYM - Symbol Table Detach 279
- Offset Field Description 280
- Example 4: 281
- T - Trace 284
- Initialize IP and R3, R4: 285
- Trace next instruction: 286
- Trace the next instruction: 287
- Breakpoint is displayed) 287
- TA - Terminal Attach 288
- TIME - Display Time and Date 289
- TM - Transparent Mode 290
- S7056504000091 297
- WL - Write Loop 303
- Part 2 of 2 305
- Conventions 308
- Safety Summary 309
- Safety Depends On You 309
- Disclaimer of Warranty 310
- 4One-Line Assembler/ 311
- Disassembler 311
- Directives 312
- Source Program Coding 313
- Instructions 316
- Addressing Modes 318
- WORD Define Constant Directive 319
- SYSCALL System Call Directive 320
- Entering a Source Line 322
- Entering Branch Operands 323
- Assembler Error Messages 324
- 5System Calls 325
- System Call Routines 326
- System Call function 327
- .INSTAT 332
- <CR> 333
- .READSTR 334
- I/O Support on page 1-23 335
- .READLN 336
- .CHKBRK 337
- .DSKRD 338
- Field descriptions: 339
- .DSKCFIG 341
- Command Packet 342
- Table 5-8. CFGA Fields 349
- .DSKFMT 351
- Entry Conditions 352
- .DSKCTRL 354
- .NETRD 356
- .NETCFIG 358
- Most SigniÞcant Word 360
- .NETFOPN 364
- .NETFRD 366
- .NETCTRL 368
- .OUTCHR 371
- .OUTSTR 372
- .WRITE 373
- .WRITELN 373
- .ERASLN 375
- .WRITD 376
- .WRITDLN 376
- .WRITD .WRITDLN 377
- Z is included if 377
- .SNDBRK 378
- .RTC_TM 380
- .RTC_DT 381
- .RTC_DSP 382
- .RTC_RD 383
- .REDIR_I 385
- .REDIR_O 385
- .RETURN 386
- .BINDEC 387
- .CHANGEV 388
- .STRCMP 389
- .MULU32 390
- .DIVU32 391
- .CHK_SUM 392
- .BRD_ID 393
- .ENVIRON 396
- .PFLASH Function 400
- .DIAGFCN 403
- F 405
- Example 1: .CHKFCN 411
- Example 2: .TESTSTAT 411
- Example 3: .MEMSTAT 412
- Example 4: .ST_NMLIST 413
- .SIOPEPS 415
- .FORKMPU Function 417
- .FORKMPUR Function 418
- .IDLEMPU Function 423
- I/O Control Structure 427
- .IOINFORM 430
- Port Control Structure 431
- .IOCONFIG 432
- .IODELETE 433
- .SYMBOLTA 435
- .SYMBOLTD 437
- Related Documentation 439
- Document Title and Source 441
- Publication 441
- Related Specifications 447
- Related Specifications 449
- BSystem Menu 451
- Go to System Diagnostics 452
- Initiate Service Call 452
- Display System Test Errors 452
- Dump Memory to Tape 452
- System Menu 453
- Tape Dump Example: 454
- Operation 455
- Enter System ID Number: 456
- Enter phone number: 456
- Manual Connection 459
- Terminal Connection 461
- CPPCBug Messages 463
- Other Messages 464
- -not found 466
- OK to proceed (y/n)? 466
- Press “RETURN” to continue 466
- WARM Start 466
- DS-Record Format 467
- S-Record Types 468
- Creating S-Records 470
- S-Record Format 473
- T L A C/D Ch 473
- EDisk and Tape Controllers 475
- PPC1Bug version 1.2 477
- FDisk Status Codes 479
- ATAPI (CD-ROM Drives) 480
- SCSI Firmware Status Codes 481
- GNetwork Controller Devices 487
- HNetwork Communication 489
- Status Codes 489
- Glossary 493
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