Advanced Level     Skills: 8051, Assembly, Maths    


These assembler files contain various math functions for 8051 and compatible microcontrollers:

The file MATH32.A51 contains code for the following 32-bit math
  • Add a 16-bit value to the 32-bit 'accumulator'.
  • Add a 32-bit value to the 32-bit 'accumulator'.
  • Subtract a 16-bit value from the 32-bit 'accumulator'.
  • Subtract a 32-bit value from the 32-bit 'accumulator'.
  • Multiply the 32-bit 'accumulator' by a 16-bit value.
  • Divide the 32-bit 'accumulator' by a 16-bit value.

The file DIV16BY8.A51 contains code to divide a 16-bit dividend by an 8-bit divisor and produce a 16-bit quotient and an 8-bit remainder.

The file LONGDIV.A51 contains code to divide an N-byte dividend by an N-byte divisor and produce an M-byte quotient.

Tags 32bit math assemblymath div assembly32-bit div assembly16-bit multiply assembly32-bit multiply assemblymath routine assembly

96.92 kB





samarnath dev
19 Jun 2015: 14:41 PM
how can subtract 23hex from 78hex for 8051 by asm51 code please help me.
samarnath dev
19 Jun 2015: 14:43 PM
how can subtract 24hex value from 78hex value for 8051 by asm51 , so please help me.
23 Jun 2015: 13:34 PM
@samarnath dev, both 0x23 and 0x78 are 8-bit values, use simple "SUBB" instruction to subtract them. Move one value in A and other in R0 or you can give direct data. Post in forum for help.
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