Rabbit 2000™ Microprocessor - UTN

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7.1 Definition of SysIDBlockThe following global struct is defined in IDBLOCK.LIB andisloadedfromtheflashdeviceduringBIOS startup. Users can access this struct in RAM if they need information from it. The definitionbelow is for a 128-byte ID block; the actual size can vary according to the value inidBlockSize.Thereserved[] field will expand and/or shrink to compensate for the changein size.typedef struct {int tableVersion; // ver. num for this table layoutint productID; // Z-World part #int vendorID; // 1 = Z-Worldchar timestamp[7]; // YY/M/D H:M:Slong flashID; // Z-World part #int flashType; // Write methodint flashSize; // in 1000h pagesint sectorSize; // size of flash sector in bytesint numSectors; // number of sectorsint flashSpeed; // in nanosecondslong flash2ID;// Z-World part #, 2nd flashint flash2Type; // Write method, 2nd flashint flash2Size; // in 1000h pages, 2nd flashint sector2Size; // byte size of 2nd flash's sectorsint num2Sectors; // number of sectorsint flash2Speed; // in nanoseconds, 2nd flashlong ramID; // Z-World part #int ramSize; // in 1000h pagesint ramSpeed; // in nanosecondsint cpuID; // CPU type identificationlong crystalFreq; // in Hertzchar macAddr[6]; // Media Access Control (MAC) addrchar serialNumber[24]; // device serial numberchar productName[30]; // NULL-terminated stringchar reserved[1]; // reserved 4 later use - size can// growlong idBlockSize; // size of the SysIDBlock structint userBlockSize; // size of user block (directly// below ID block)int userBlockLoc; // offset of start of user block// from this blockint idBlockCRC; // CRC of this block (when this// field is set to zero)char marker[6]; // should be 0x55 0xAA 0x55 0xAA// 0x55 0xAA} SysIDBlock;38 Rabbit 2000 Microprocessor
7.2 AccessThe BIOS will read the system ID block during startup, so all a user needs to do is access the systemID block struct SysIDBlock in memory. If the BIOS does not find an ID block, it sets allparameters in SysIDBlock to zero.7.2.1 Reading the SystemID BlockIf the user desires to read the ID block off the flash, the following function (from IDBLOCK.LIB)should be called:_readIDBlockint _readIDBlock(int flash_bitmap)DESCRIPTION:PARAMETERAttempts to read the system ID block from the highest flash quadrant and save it in thesystem ID block structure. It performs a CRC check on the block to verify that the blockis valid. If an error occurs, SysIDBlock.tableVersion is set to zero.flash_bitmapBitmap of memory quadrants mapped to flash. Examples:0x01 = quadrant 0 only0x03 = quadrants 0 and 10x0C = quadrants 2 and 3RETURN VALUE:0: Successful-1: Error reading from flash-2:IDblockmissing-3: ID block invalid (failed CRC check)7.2.2 Writing the SystemID BlockThe WriteFlash() function does not allow writing to the ID block. If the ID block needs to berewritten, a utility to do so is available for download from the Z-World website:http://www.zworld.com/support/feature_downloads.htmlor contact Rabbit Semiconductor’s Technical Support.Designer’s Handbook 39
Page 1 and 2: Rabbit 2000 MicroprocessorDesigner
Page 3 and 4: Table of Contents1 Introduction ...
Page 5 and 6: Instructions Affected by the Wait S
Page 7 and 8: 1. IntroductionThis manual is inten
Page 9 and 10: 2. Rabbit Hardware DesignOverviewBe
Page 11 and 12: 2.3 Power ConsumptionWhen minimum p
Page 13 and 14: 3. Core Design and ComponentsCore d
Page 15 and 16: 3.2 Basic Memory DesignNormally /CS
Page 17 and 18: 3.3 PC Board Layout and Memory Line
Page 19 and 20: With a Rabbit-based system it is ea
Page 21 and 22: 3.4.2.3 High Frequency Oscillator C
Page 23 and 24: 3.4.2.4 Processor DecouplingThe int
Page 25 and 26: 4. How Dynamic C Cold Boots theTarg
Page 27 and 28: 4.2 Program Loading Process Overvie
Page 29 and 30: 5. Rabbit Memory OrganizationThe Ra
Page 31 and 32: 5.2.1 DefinitionsExtended Code: Ins
Page 33 and 34: 5.3.2 Paged Access in Extended Memo
Page 35 and 36: 6. The Rabbit BIOSWhen Dynamic C co
Page 37 and 38: 6.2 BIOS FlowchartThe following flo
Page 39 and 40: DATAORGBeginning logical address fo
Page 41 and 42: All origin statements must have a u
Page 43: 7. The System ID BlockThe BIOS supp
Page 47 and 48: Table 4. The System ID Block (Conti
Page 49 and 50: 8. BIOS Support for ProgramCloningT
Page 51 and 52: 8.2.3 LED PatternsThe following tab
Page 53 and 54: 9. Low-Power Design and SupportTo g
Page 55 and 56: 9.1 Software Support for Low-Power
Page 57 and 58: 10. Memory PlanningThe following re
Page 59 and 60: 11. Flash MemoriesThe flash memorie
Page 61 and 62: Table 7. 32-Pin Flash Memories Supp
Page 63 and 64: The field flashXPC contains the XPC
Page 65 and 66: 12. Troubleshooting Tips for NewRab
Page 67 and 68: 80 24 80 //terminate bootstrap, sta
Page 69 and 70: Appendix A. Supported Rabbit 2000Ba
Page 71 and 72: Appendix B.Wait State BugB.1 Overvi
Page 73 and 74: If the atomic nature of the operati
Page 75 and 76: B.4 Enabling Wait StatesMemory wait
Page 77: Legal NoticeRabbit Semiconductor pr

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