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| <h1> words/doqdo.asm </h1> |
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| <pre> |
| ; ( limit counter -- ) |
| ; R( -- limit counter ) |
| ; runtime of do |
| ;VE_DODO: |
| ; .db 4, "(do)", 0 |
| ; .dw VE_HEAD |
| ; .set VE_HEAD = VE_DODO |
| XT_DOQDO: |
| .dw PFA_DOQDO |
| PFA_DOQDO: |
| ; put the content of the next flash cell on return stack |
| ; it is the address of the instruction _after_ the (+)loop |
| movw zl, xl |
| lsl zl |
| rol zh |
| lpm temp0, Z+ |
| lpm temp1, Z+ |
| adiw xl, 1 ; adjust to NEXT+1 = jump over <mark (for leave) |
| |
| ld temp2, Y+ |
| ld temp3, Y+ |
| ; now check for equality |
| cp tosl, temp2 |
| cpc tosh, temp3 |
| brne PFA_DODO1 |
| ; both values are the same -> skip to loop |
| movw xl, temp0 |
| rjmp DO_NEXT |
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