Keil C51 V9.02a

发布时间:2010-12-30 13:46    发布者:micdot
关键词: Keil , C51
keil C51的V9.02a版本出来了。主要修改的内容如下:
C51 Version 9.02 Release
  • [Cx51 Compiler]
    • Improved: access to bit-field members with size 1 bit. The compiler uses bit instructions to access such bit-field members. When objects are defined with the bdata memory type, direct bit addressing is used. Example: struct bf { unsigned char b0:1; unsigned char b1:1; };struct bf       a;struct bf bdata b;  :if (a.b0 && b.b1)  b.b1 = 0;
    • Corrected: multiplication long = int * int is potentially incorrect in Dallas 390 mode.
    • Corrected: explicit cast to unsigned char was ignored with complex address arithmetic. Example: unsigned char far table[256];unsigned char i, v;  :v = table[(unsigned char)(16+i+20)];  // index now truncated to 8-bit
    • Corrected: when using conditional operators (? in complex parameter lists, there is a potential for unbalanced PUSH / POP instructions. This typically creates a application program crash at the function call.
    [
    • Corrected: the function toint did not detect the value range 0x59 - 0x40 as invalid. Now the function returns -1 for these values.
    • Corrected: timing of Multiplication Division Unit (MDU) in Evatronix R8051XC2 device is faster and now reflected in the C Library. The MDU timing for int/long multiplication and long division is adjusted.
  • [New Supported Devices]
  • [Device Simulation]
    • Corrected: SiLabs C8051F41x devices: SMBus simulation when using I2C generator.
    • Corrected: SiLabs C8051F12x devices: automatic page switch for interrupts and timing of timer 2/3/4.
    • Corrected: SiLabs C8051F12x devices: on I2C the receive of more than 256 bytes now generates a stop.
    • Corrected: SiLabs C8051F36x devices: crossbar did not connect the right I/O signals under some circumstances.
    • Corrected: Evatronix T8051: CPU instruction timing.
Keil C51 V9.02a 官方下载地址: http://www.keil.com/fid/q1vetmwy ... s/eval/c51v902a.exe
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echoas 发表于 2011-1-3 11:32:04
好新的版本 我现在用的还是3呢
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