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???
01/19/10 10:35
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 		 #172589 - Compiler specifics
Responding to: ???'s previous message
Frieder Ferlemann said:
unsigned char __xdata __at(0x0000) table_P2_over_time[200 + 1];

I guess that's SDCC syntax?

Keil would be somewhat different.

What is the point in absolutely-locating it? Seems unnecessary to me...

void Timer0_ISR (void) interrupt 1 {

For Keil, consider adding a using option to specify a Register Bank - this can significantly reduce the overhead on entering & leaving the ISR...



List of 41 messages in thread
TopicAuthorDate
Controlling multiple servo motors            01/01/70 00:00      
   executing code takes time            01/01/70 00:00      
      PWM code            01/01/70 00:00      
         Thanks...now, about the PCA timer..            01/01/70 00:00      
   If SDCC Then Keil            01/01/70 00:00      
      PWM IRQ code in C, bitops, 45 byte            01/01/70 00:00      
         Optimization having no effect.            01/01/70 00:00      
      PWM IRQ code in C, lookup table, 32 byte            01/01/70 00:00      
         I haven't understood the table lookup concept very well...            01/01/70 00:00      
            table lookup            01/01/70 00:00      
         PWM IRQ code in C, lookup table, 30 byte            01/01/70 00:00      
            Compiler specifics            01/01/70 00:00      
               absolutely-locating xdata at 256 byte boundary            01/01/70 00:00      
                  I see.            01/01/70 00:00      
            An example code..            01/01/70 00:00      
               Keil: Specifics and non-specifics            01/01/70 00:00      
                  Not really working...            01/01/70 00:00      
                     Enough power?            01/01/70 00:00      
                        RE: running 32 servo motors            01/01/70 00:00      
      The chip sounds perfect...            01/01/70 00:00      
         not worth it            01/01/70 00:00      
            Servo control will become difficult then...            01/01/70 00:00      
               output            01/01/70 00:00      
               HCT chips have ...            01/01/70 00:00      
                  Eval a concept with a single PCA and 3:8 HCT multiplexer?            01/01/70 00:00      
               Check their website            01/01/70 00:00      
                  Here is the code...            01/01/70 00:00      
                     "sbit MTRS=P2^0;" is not OK here            01/01/70 00:00      
                        Keil syntax?            01/01/70 00:00      
                           "#define" not working.."sbit" works            01/01/70 00:00      
                              Yes, you were correct originally!            01/01/70 00:00      
            Seconded            01/01/70 00:00      
   Servo_0.1.zip            01/01/70 00:00      
      links            01/01/70 00:00      
   Eventually feed the guys at http://servomaster.sf.net ?            01/01/70 00:00      
      servomaster.sf.net FLOSS            01/01/70 00:00      
   Maybe of some use...            01/01/70 00:00      
      Whoops... found a bug            01/01/70 00:00      
         What bug?            01/01/70 00:00      
            Bug            01/01/70 00:00      
   Improved version uploaded            01/01/70 00:00      

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