MAXQ Core Assembly Guide - Maxim

MAXQ Core Assembly Guide29: 0019: 6B00 move PFX[6], #00h ; Manual version30: 001A: F070 move M0[7], M0[7]31: 001B: 6B0031: 001C: F070 move M0[31], M0[7] ; Automatic version33: 001D: 7B00 move PFX[7], #00h ; Manual version34: 001E: 8000 move M0[0], M0[0]35: 001F: 7B0035: 0020: 8000 move M0[24], M0[16] ; Automatic version37: 0021: 0B12 move PFX[0], #012h ; Manual version38: 0022: 0034 move M0[0], #034h39: 0023: 0B1239: 0024: 0034 move M0[0], #01234h ; Automatic version41: 0025: 2B12 move PFX[2], #012h ; Manual version42: 0026: 0034 move M0[0], #034h43: 0027: 2B1243: 0028: 0034 move M0[8], #01234h ; Automatic version45: 0029: 4B12 move PFX[4], #012h ; Manual version46: 002A: 0034 move M0[0], #034h47: 002B: 4B1247: 002C: 0034 move M0[16], #01234h ; Automatic version49: 002D: 6B12 move PFX[6], #012h ; Manual version50: 002E: 0034 move M0[0], #034h51: 002F: 6B1251: 0030: 0034 move M0[24], #01234h ; Automatic version52:53: endManual prefixing opens up a few new possibilities. For example, any two 8-bit registers can be merged into any16-bit register, without requiring GR to be overwritten.53: 0031: ABE8 move PFX[2], CKCN54: 0032: 89F8 move A[0], WDCN ; Sets A[8] = CKCN:WDCNPrefixing with the MaxQ30 CoreWhen using the MaxQ30 core (-w32 switch), prefixing operates identically to the MaxQ10 and MaxQ20 coresexcept that the prefix register PFX may be loaded back-to-back to load larger values. The last load of PFX beforethe instruction is used to set the high-order destination and source bits; previous loads must be to PFX[0] orPFX[1]. So, for example, loading a 32-bit immediate value into one of the accumulator registers assembles to:4: 000001: 0B12 ; move PFX, #12h4: 000002: 0B34 ; move PFX, #34h4: 000003: 0B56 ; move PFX, #56h4: 000004: 1978 move A[1], #012345678h ; move A[1], #78hwhich takes four cycles to execute.Version 1.2 24 of 43 March 7, 2007