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• Z80:Opcodes:RRCA
  Performs a [[Z80:Opcodes:RRC|RRC A]] faster and modifies the flags differently. ...80:Opcodes:SLA|SLA]],[[Z80:Opcodes:SLL|SLL/SL1]],[[Z80:Opcodes:SRA|SRA]],[[Z80:Opcodes:SRL|SRL]]
  899 bytes (144 words) - 22:29, 5 February 2016
• Z80:Opcodes:RLCA
  Performs [[Z80:Opcodes:RLC|RLC A]] much quicker, and modifies the flags differently. ...80:Opcodes:SLA|SLA]],[[Z80:Opcodes:SLL|SLL/SL1]],[[Z80:Opcodes:SRA|SRA]],[[Z80:Opcodes:SRL|SRL]]
  859 bytes (136 words) - 22:36, 5 February 2016
• Z80:Opcodes:RRA
  Performs a [[Z80:Opcodes:RR|RR A]] faster, and modifies the flags differently. ...80:Opcodes:SLA|SLA]],[[Z80:Opcodes:SLL|SLL/SL1]],[[Z80:Opcodes:SRA|SRA]],[[Z80:Opcodes:SRL|SRL]]
  900 bytes (144 words) - 22:37, 5 February 2016
• Z80:Opcodes:RLA
  Performs an [[Z80:Opcodes:RL|RL A]], but is much faster and S, Z, and P/V flags are preserved ...80:Opcodes:SLA|SLA]],[[Z80:Opcodes:SLL|SLL/SL1]],[[Z80:Opcodes:SRA|SRA]],[[Z80:Opcodes:SRL|SRL]]
  901 bytes (150 words) - 22:42, 5 February 2016
• Z80:Opcodes:RLC
  ...80:Opcodes:SLA|SLA]],[[Z80:Opcodes:SLL|SLL/SL1]],[[Z80:Opcodes:SRA|SRA]],[[Z80:Opcodes:SRL|SRL]] [[Category:Z80 Assembly]]
  1 KB (190 words) - 22:24, 5 February 2016
• Z80:Opcodes:RRC
  ...80:Opcodes:SLA|SLA]],[[Z80:Opcodes:SLL|SLL/SL1]],[[Z80:Opcodes:SRA|SRA]],[[Z80:Opcodes:SRL|SRL]] [[Category:Z80 Assembly]]
  1 KB (199 words) - 22:33, 5 February 2016
• Z80:Opcodes:RL
  ...80:Opcodes:SLA|SLA]],[[Z80:Opcodes:SLL|SLL/SL1]],[[Z80:Opcodes:SRA|SRA]],[[Z80:Opcodes:SRL|SRL]] [[Category:Z80 Assembly]]
  1 KB (208 words) - 22:33, 5 February 2016
• Z80:Opcodes:BIT
  ...,[[Z80:Opcodes:RES|RES]],[[Z80:Opcodes:SCF|SCF]],[[Z80:Opcodes:SET|SET]],[[Z80:Opcodes:XOR|XOR]] [[Category:Z80 Assembly]]
  1 KB (224 words) - 22:37, 5 February 2016
• Z80:Opcodes:RR
  ...80:Opcodes:SLA|SLA]],[[Z80:Opcodes:SLL|SLL/SL1]],[[Z80:Opcodes:SRA|SRA]],[[Z80:Opcodes:SRL|SRL]] [[Category:Z80 Assembly]]
  1 KB (202 words) - 22:08, 5 February 2016
• Z80:Opcodes:RLD
  ...80:Opcodes:SLA|SLA]],[[Z80:Opcodes:SLL|SLL/SL1]],[[Z80:Opcodes:SRA|SRA]],[[Z80:Opcodes:SRL|SRL]] [[Category:Z80 Assembly]]
  1 KB (185 words) - 22:16, 5 February 2016
• Z80:Opcodes:SLA
  ...80:Opcodes:RRD|RRD]],[[Z80:Opcodes:SLL|SLL/SL1]],[[Z80:Opcodes:SRA|SRA]],[[Z80:Opcodes:SRL|SRL]] [[Category:Z80 Assembly]]
  1 KB (177 words) - 22:28, 10 March 2017
• Z80:Opcodes:SRA
  ...80:Opcodes:RRD|RRD]],[[Z80:Opcodes:SLA|SLA]],[[Z80:Opcodes:SLL|SLL/SL1]],[[Z80:Opcodes:SRL|SRL]] [[Category:Z80 Assembly]]
  1 KB (171 words) - 22:12, 10 March 2017
• Z80:Data Manipulation and Basic Math
  ...e desired, but for now let's start at the most basic part of doing math in assembly. ...all we can do is multiply a number by powers of 2! Or is it? Remember, the z80 processor (in fact, all modern computers) are binary based. And also, the s
  6 KB (974 words) - 20:58, 3 February 2016
• Z80:Opcodes:CPI
  # [[Z80:Opcodes:CP|CP]] (HL) # [[Z80:Opcodes:INC|INC]] HL
  968 bytes (154 words) - 22:38, 5 February 2016
• Z80:Opcodes:CPD
  # [[Z80:Opcodes:CP|CP]] (HL) # [[Z80:Opcodes:DEC|DEC]] HL
  936 bytes (151 words) - 22:42, 5 February 2016
• Z80:Opcodes:JP
  ...so decide whether speed or size is more important before choosing JP or [[Z80:Opcodes:JR|JR]]. JP (HL), JP (IX), and JP (IY) are unconditional and are th ...80:Opcodes:CPI|CPI]],[[Z80:Opcodes:CPIR|CPIR]],[[Z80:Opcodes:DJNZ|DJNZ]],[[Z80:Opcodes:JR|JR]]
  2 KB (292 words) - 21:57, 5 February 2016
• Z80:Opcodes:CALL
  ...]],[[Z80:Opcodes:DJNZ|DJNZ]],[[Z80:Opcodes:JP|JP]],[[Z80:Opcodes:JR|JR]],[[Z80:Opcodes:RET|RET]] [[Category:Z80 Assembly]]
  2 KB (249 words) - 22:22, 5 February 2016
• Z80:Opcodes:JR
  ...nd. Can be conditional or unconditional. JR takes up one less byte than [[Z80:Opcodes:JP|JP]], but is also slower. Weigh the needs of the code at the tim ...80:Opcodes:CPI|CPI]],[[Z80:Opcodes:CPIR|CPIR]],[[Z80:Opcodes:DJNZ|DJNZ]],[[Z80:Opcodes:JP|JP]]
  1 KB (229 words) - 18:31, 19 March 2017
• Z80:Opcodes:CPDR
  Repeats [[Z80:Opcodes:CPD|CPD]] until either: Note if you used [[Z80:Opcodes:CPIR|CPIR]] it would find the first occurrence of 124 in the valid
  1 KB (181 words) - 21:59, 5 February 2016
• Z80:Opcodes:XOR
  ...one 8-bit input and compares it with the accumulator. XOR is similar to [[Z80:Opcodes:OR|Or]], except for one thing: only 1 of the 2 test bits can be set ...t to invert sprites and such. It is also very useful in bit-masking. See [[Z80:Flags and Bit-Level Instructions|here]] for more information about bit-mask
  1 KB (218 words) - 07:50, 6 February 2016

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