1、Release Notes for C51单片机笔记Release Notes for C518051 Development Tool KitsThis file contains release notes and last minute changes that are not found in the printed manuals.Information in this file, the accompany manuals, and software isCopyright Keil Software, Inc and Keil Elektronik GmbH.All rights
2、 reserved.Contents1 Whats New in C512 Example Programs3 Device Database4 Peripheral Simulation5 Technical Support6 Contact DetailsWhats New in C51The following sections list the changes instituted in each release of the C51 toolset.C51 Version 9.00 Release Vision4 This C51 release comes with the new
3、 Vision4 IDE.New Supported Devices EvatronixR8051XC(1 DPTR), R8051XC2(1 DPTR), R8051XC2(2 DPTR), R8051XC2(8 DPTR), R8051XC2-A(1 DPTR), R8051XC2-A(2 DPTR), R8051XC2-A(8 DPTR), R8051XC2-AF, R8051XC2-B(1 DPTR), R8051XC2-B(2 DPTR), R8051XC2-B(8 DPTR), and R8051XC2-BF devices. NordicnRFLU1P-F16and nRFLU1
4、P-F32 devices. NXPP89LPC9361device. SilabsC8051F580, C8051F581, C8051F582, C8051F583, C8051F584, C8051F585, C8051F586, C8051F587, C8051F588, C8051F589, C8051F590, and C8051F591 devices.Device Support Corrected:device settings forInfineon XC888-6FF, XC888CM-8FF, XC888LM-6FF, XC886-6FF, XC866L-1FR, XC
5、866L-2FR, XC866L-4FR, and XC864-1FRI devices. Corrected: device settings for Nordic Semiconductor nRF24E1, nRF24E2, nRF9E5, nRF24LU1, and nRF24LE1 devices. Added: debug support for NXP P89LPC9361 and P89LPC954 devices in the LPC900 EPM Emulator/Programmer. Updated: LPC900 EPM flash programmer config
6、uration dialog to support devices with 16 flash sectors.CX51 Compiler Corrected: constant folding of two negative array index values. For example:unsigned char arr512;unsigned int i;i = arri-1-5; / incorrect in C51 V8: arri-4 instead of arri-6 Corrected: when using the NOAREGS directive, complex ari
7、thmetic with nested calls may create incorrect results. For example:#pragma NOAREGSint result;extern char f(unsigned char idx);result = (f(1)*0x100+f(0) - (f(3)*0x100+f(2); / incorrect result. POP destroys value in ACCLX51 Linker/Locater Corrected: when using OPTIMIZE(10) or above, there was a poten
8、tial that common code blocks are called incorrectly. Therefore programs may have operated incorrectly.BL51 Linker/Locater Corrected: when using RTX51 user interrupt functions were overlapping with RTX ISR vectors which resulted in a linker warning. Corrected: data overlaying may not work when the la
9、st input module contains an interrupt function; the linker incorrectly issues WARNING 16: main uncalled.C51 Version 8.18 Release Device Support Added: debug support for NXP P89LPC9408 in the LPC900 EPM Emulator/Programmer.New Supported Devices NuvotonW681308device. NXPP89LPC9201, P89LPC9211, P89LPC9
10、22A1, P89LPC9241, P89LPC9251, P89LPC9301, P89LPC931A1, P89LPC9331, P89LPC9341, and P89LPC9351 devices. SilabsC8051F500, C8051F501, C8051F504, C8051F505, C8051F506, C8051F507, C8051F508, C8051F509, C8051F510, C8051F511, C8051F700, C8051F701, C8051F702, C8051F703, C8051F704, C8051F705, C8051F706, C805
11、1F707, C8051F708, C8051F709, C8051F710, C8051F711, C8051F712, C8051F713, C8051F714, and C8051F715 devices.ULINK2 Support Corrected: potential deadlock on ST uPSD targets with ULINK2 solved.Device Simulation Corrected: Infineon XC800 simulation of the MDU was incorrectly implemented. Corrected: For C
12、8051F12x/F13x devices the EXFn and TOGn behavior matches with latest information from SiLABS. Added: simulation for Atmel AT89C51RE2. The second UART is now available for the simulation.CX51 Compiler Corrected: initialization failed on far addresses when the object is located with _at_. For example:
13、#pragma VARBANKING O2unsigned char far array65530 _at_ 0x150006;unsigned long x1 = (unsigned long)(array); / incorrect address stored in x1.C51 Version 8.17a Release Device Support Added: debug support for the follow devices from Analog Devices ADE5166, ADE5169, ADE5566,ADE5569, ADE7166F16, ADE7166F
14、8, ADE169F16, ADE7566F16, and ADE7566F8 in the ADI Monitor Driver. Added: debug support for NXP P89LPC9321 and P89LPC9351 devices in the LPC900 EPM Emulator/Programmer.Device Support Added: Nuvoton devices in the device database. Corrected: Port Pin P2.2 is available (instead of P2.5) on NXP P89LPC9
15、17 devices. This is now reflected in the peripheral dialogs. Corrected: UART0 baudrate is now correctly displayed when Timer2/3/4 is used as baudrate generator on SiLabs C8051F13x devices.Device Simulation Corrected: simulation of Reset Source Register (RSTSRC) and SFR Page Control Register (SFRPGCN
16、) for SiLabs C8051Fxxx devices. Corrected: handling of Automatic Page Control Enable (SFRPGCN) and Reset Source Register (RSTSRC) for SiLabs C8051Fxxx devices. Corrected: simulation of PLLLCK (PLL Lock Flag) for SiLabs C8051F12x/13x devices. PLLLCK is now set when PLL is configured correctly and fre
17、quency is locked. Added: support for V: user-defined memory area for NXP 80C51MX devices. Corrected: simulation issues with the Evatronix R8051XC peripherals DMA and interrupt.CX51 CompilerCorrected: when two long operands are loaded from complex arrays (each with object size bigger than 256 bytes),
18、 there was a potential register overwrite in register R0. The result of the long operation was in such cases incorrect.Example:struct s2 unsigned int idx : 1; s2;struct s unsigned long l1; unsigned char a256; unsigned long l2; xdata sarr2;unsigned long l;void main (void) l = sarrs2.idx.l1 + sarrs2.i
19、dx.l2; / incorrect result of long additionAX51 Macro Assembler Corrected: in NXP 80C51MX mode, DATA, IDATA, and EDATA can be placed to absolute addresses 0x7F0000 and above. This is now accepted. Added: ECRM directive that allows to expand generic CALL instructions to ECALL for NXP 80C51MX devices.C
20、51 Version 8.16a ReleaseCX51 Compiler Corrected: when int numbers are multiplied and assigned to long, the result is potential incorrect. This problem has been introduced in V8.15. Corrected: C51 _at_ problem with linker code packing fixed.AX51 Macro Assembler Enhanced: for the NXP MX devices, CALL/
21、JMPinstructions are encoded to ECALL/JMP when needed.Device Support Added: ULINK and Infineon DAS (Device Access Server) support for the XC864 device. Enhanced: Evatronix R8051XC XDATA Banking example optimized. Enhanced: Infineon XC800 startup code. Added: Support for Infineon XC864 including a Bli
22、nky example. Added: Syntek Semiconductors STK6031 and STK6032 devices to device database.Device Simulation Added: for SiLABS C8051F360/1/2/3/4/5/6/7/8/9 and C8051F410/1/2/3.C51 Version 8.15 ReleaseCx51 Compiler Corrected: interrupt functions combined with NOINTVECTOR where not detected by the linker
23、 as new root and an incorrect linker warning was reported. Corrected: when using Dallas 390 mode with ROM(D512K) or ROM(D16M), pdata arrays could not be located anywhere in memory. Corrected: when using the XCROM directive in combination with function pointers, constant initializations where omitted
24、. Enhanced: long multiplication with two unsigned int/char arguments has now a much higher performance.Target Support Added: support for the Infineon USCALE XC800 hardware via the Infineon DAS Client for XC800.Device Simulation Corrected: access to MACACC was not corrected simulated for SiLABS C8051
25、F12x and C8051F13x devices. Added: device support and simulation for Infineon XC878. Added: simulation for new peripherals (Software Reset, RTC, DMA) on Evatronix R8051XC core. Added: xdata banking support for Evatronix R8051XC core.LX51 Linker/Locater Corrected: Linker Code Packing may combine inco
26、rrectly blocks from several code banks into common areas.ULINK2 Support Added: Debug and Flash-Programming support for NXP P89LPC952 and P89LPC954.C51 Version 8.12 ReleaseDevice Simulation Added: device support and simulation for SiLABS C8051T600/1/2/3/4/5 and C8051T610/1/2/3/4/5/6/7.Cx51 Compiler C
27、orrected: nested call with struct pointer arguments where incorrectly processed.LX51 Linker/Locater Corrected: sfr16 definitions in assembly code and C source file may generate Warning L46: SFR SYMBOL HAS DIFFERENT VALUE.C51 Version 8.11a Release Device SupportAdded: support for Ramtron VRS51L3072 a
28、nd VRS51L3174. Added: support for Nordic Semiconductor nRF24LU1.Device Simulation Added: device support and simulation for SiLABS C8051F336, C8051F337, C8051F338, and C8051F339. Corrected: PORTx and PCA output pins on SiLABS C8051F12x did not correctly update in simulation.C51 Version 8.10 Release D
29、evice SupportAdded: support for Megawin MPC82G516A and MPC82L54A. Enhanced: startup code for Infineon XC800 devices has now selections for device variants. Infineon XC88x AC step devices requires to set the device to VCO bypass mode before PLL switching. Added: support for NXP P89V52X2.Device Simula
30、tion Corrected: simulation of MULRDY and OSCICL corrected for SiLABS C8051F3xx series. Enhanced: simulation of Evatronix R8051XC watchdog timer with optional prescaler. For details refer to Application Note 191: Toolchain Extensions for R8051XC Core. Corrected: DPTR simulation of Evatronix R8051XC;
31、when 2 DPTR where selected the auto-increment feature (DPC register) did not work. Two R8051XC devices are now in the device database: R8051XC (8 DPTR) with simulation for 8 DPTR, R8051XC (2 DPTR) with simulation for 2 DPTR. Corrected: SiLABS simulation for UART #1 had a problem with the transmit interrupt bit (TI) when SFR page was set to 1.Cx51 Compiler Corrected: the MODC2 directive did not correctly save and restore multiple DPTR registers on interrupt entry/exit. Corrected: Assembler instructions inserted with #pra
