Mirror of CollapseOS
選択できるのは25トピックまでです。 トピックは、先頭が英数字で、英数字とダッシュ('-')を使用した35文字以内のものにしてください。

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  1. Structured flow
  2. z80a also has words that behave similarly to IF..THEN and
  3. BEGIN..UNTIL.
  4. On the IF side, we have IFZ, IFNZ, IFC, IFNC, and THEN,. When
  5. the opposite condition is met, a relative jump is made to
  6. THEN,'s PC. For example, if you have IFZ, a jump is made when
  7. Z is unset.
  8. On the BEGIN,..AGAIN, side, it's a bit different. You start
  9. with your BEGIN, instruction, and then later you issue a
  10. JRxx, instr followed by AGAIN,. Exactly like you would do
  11. with a label.
  12. (cont.)