TMS320C5x DSP STARTER KIT USER'S GUIDE
TMS320C5x DSP STARTER KIT USER'S GUIDE TMS320C5x DSP STARTER KIT USER'S GUIDE
Quick-Reference Guide6.5 Quick-Reference GuideTable 6-12, Table 6-13, and Table 6-14 provide a quick-reference guide to thedebugger function key definitions, floating-point formats, and register definitions.Table 6–12.Debugger Function Key DefinitionsFunction KeyDescriptionF1F2F3F4F5F6F7F8F9F10Displays help informationPrints the contents of the screen to a file named screen.srnDisplays the directoryNot usedExecutes your program to the next breakpointNot usedNot usedSingle-steps your programNot usedSingle-steps your program and steps past callsF11 or SPACE F1 Displays the reverse assembly windowF12 or SPACE F2 Turns the trace on or off (this key acts as a toggle switch)Table 6–13.Debugger Floating-Point FormatsFloating-PointFormat.float.double.bfloat.tfloat.efloatDescription32-bit IEEE standardized floating-point format64-bit IEEE standardized double floating-point format16-bit exponent + 32-bit mantissa(exponent is 2s complement / mantissa = Q30)32-bit exponent + 64-bit mantissa(exponent is 2s complement / mantissa = Q62)16-bit exponent + 16-bit mantissa(exponent is 2s complement / mantissa = Q14)6-18
Quick-Reference GuideTable 6–14.Debugger Register DefinitionsRegister Definition DescriptionACCU Accumulator 32 bits with a carry in ST1ACCB Accumulator buffer 32 bits to temporarily storeACCUPREG Product register 32 bits used for 16 x 16 bitmultiplicationTRG0 Temporary multiplicand 16 bits for multiplication andspecial instructionsTRG1 Temporary register 1 5 bits for dynamic shiftTRG2 Temporary register 2 4 bits for bit pointer in bit testARi Auxiliary register 16 bits with i = 0, 7 used asa counter and pointerST0 Status register 0 16 bitsST1 Status register 1 16 bitsPMST Status register 16 bitsSPC Serial port control register 16 bitsSTCKi Stack register 16 bits with i = 0,7 used forhardware stacking †DRR Data receive register at address 32 16 bits for the serial portDXR Data transmit register at address 33 16 bits for the serial portTIM Timer register at address 36 16 bitsPRD Period register at address 37 16 bitsIMR Interrupt mask register at address 4 9 bits for masking 9 interruptsGREG Global register at address 5 8 bits to define data memoryas globalARP (ST0) Auxiliary register pointer 3 bitsOV (ST0) Overflow flag 1 bitOVM (ST0) Overflow mode 1 bitINTM (ST0) Interrupt mode (enable global interrupt) 1 bitDP (ST0) Data page pointer 9 bitsARB (ST1) Auxiliary register pointer buffer 3 bitsCNF (ST1) DARAM program/data configuration 1 bitTC (ST1) Test/control flag 1 bitSXM (ST1) Sign-extension mode enable 1 bitC (ST1) Carry bit 1 bitHM (ST1) Hold mode selection 1 bit† The debugger uses one stack level for itself.Using the DSK Debugger6-19
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Quick-Reference Guide6.5 Quick-Reference GuideTable 6-12, Table 6-13, and Table 6-14 provide a quick-reference guide to thedebugger function key definitions, floating-point formats, and register definitions.Table 6–12.Debugger Function Key DefinitionsFunction KeyDescriptionF1F2F3F4F5F6F7F8F9F10Displays help informationPrints the contents of the screen to a file named screen.srnDisplays the directoryNot usedExecutes your program to the next breakpointNot usedNot usedSingle-steps your programNot usedSingle-steps your program and steps past callsF11 or SPACE F1 Displays the reverse assembly windowF12 or SPACE F2 Turns the trace on or off (this key acts as a toggle switch)Table 6–13.Debugger Floating-Point FormatsFloating-PointFormat.float.double.bfloat.tfloat.efloatDescription32-bit IEEE standardized floating-point format64-bit IEEE standardized double floating-point format16-bit exponent + 32-bit mantissa(exponent is 2s complement / mantissa = Q30)32-bit exponent + 64-bit mantissa(exponent is 2s complement / mantissa = Q62)16-bit exponent + 16-bit mantissa(exponent is 2s complement / mantissa = Q14)6-18
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