Assembler - whakahau taumata-iti mō hötaka tauhou

Ka taea te mahi i anake e te reo mīhini whakahau katoa. Assembler whakahau - he kanohi tohu o te reo. Ki reira, tuhituhi hōtaka iti, engari rawa nohopuku. Otiia ahakoa to ratou rahi, te tukanga tuhituhi, ko te kai wa rawa. Na reira, kei te whakamahia te tohutohu whakaminenga mo te wae pūmārō, ranei ka ko te hōtaka nui e kore e nui te pūmahara. Na reira, i whakaputaina te waehere assembler e i roto i te puka o te iti-hōtaka, me ngātahi ki te waehere taumata-tiketike. Mai taea te assembler rerekē nui i runga i te momo o te hoahoanga rānei, me whai whakaaro koe i te reira mo te take ngā, tēnei tuhinga ko te hoahoanga Win. Ko te whakaahuatanga o ngā tohutohu whakaminenga, rite ki te tikanga, e kore e huri nui, a taea te whakamahi ratou i roto i microcontrollers, me ētahi atu pūrere hiko e whakamahi te assembler.

whakahau tauhanga whakamahia i roto i te whakaminenga

Ahakoa tenei lēsoni, kia rite ki ma'á, ko a taea te whakamahi 4 anake ako assembler tauhanga e hötaka. Otiia, i hanga e ratou i te reo hōtaka taumata-tiketike, e mahi rorohiko, taputapu te kāinga, waea, waea atamai, rorohiko, me te pera i runga i. D. Mahi ki a ratou he taea, a tino pai. rārangi whakahau assembler ko e whai ake:

• tua;
• tangohanga;
• whakareatanga;
• wehenga.

tua

mahi tātai, mohiotia mai te kura nui. Hei whakamahi i tēnei āhuatanga e hiahia ana koe ki te whakaaro i te tua anake, e pā nei te ki te kanohi o nga tau kotuituitanga i roto i te mahara o te rorohiko. He tirohanga whānui o te mahi ko te rite e whai ake nei:

Te tāpiri

Ko te kapa e he maha o ngā pūtau, tāpiri tahi ratou ka tuhi "Yacheyku1". Na te mahi o nga tikanga irava: Me whai te taumira kotahi te tau e rua o ngā pūtau. Hoki, ki te mea i reira te mea he rēhita tuatahi, ka koe e taea e tāpiri i runga ki reira katoa. Ki te reira te mea he pūtau tuatahi, na ko reira taea ki te tāpiri i runga i ranei operand tonu te rēhita ranei.

titau Whakaahuatanga o tohutohu whakaminenga, me to ratou whakatinanatanga huarahi atu whānui atu taea whakarato kotahi tuhinga. Na roto i te kapa whakaminenga, ahakoa to ratou nui aroha, reira te na maha pukapuka e whai ake atu i te kotahi rau ngā whārangi i tuhituhia. Na reira, ahakoa te noho noa kitea, akiaki matou ki a koe te pānui i taipitopito atu whakaahua te mahi o te rōpū, e ka tuku matau koe nga mita katoa hoki architectures rerekē.

tangohanga

whakamana ana tēnei mahi e te hātepe taua rite te kotahi o mua. Ahakoa kapa rite te momo record:

Ko te SUB

Ko te parau tumu o te tātaitanga ko e whai ake: Tangohia i №1 №2, ka tuhirua te №1. Ngā haere ngā mahi ko te taua rite me tikanga o te mahi tua.

whakareatanga

Ki te te wehenga me te tua whakamahia te kapa taua rite mo te waitohu me te mo tau hainatia, na te whakareatanga, me te wehenga i reira e ngā hātepe mo ratou. Hei tauira, ki te tini tau waitohu whakamahi i tēnei whakahau:

MUL

Tohua i roto i te tauwhakaarotau whakahau ko tetahi o nga take. E whakaritea Wāhi o te tuarua take me te wahi hua mahi i roto i te mua, i runga i te rahi i roto i te bytes MUL rānei. Ratou wāhi - he kaupapa mo tetahi tuhinga. Hoki whakareatanga hainatia whakamahi i te whakahau:

IMUL

Ka taea e koe te whakatau i ētahi atu taatou, engari ko reira atu mārama, me te mōhio. Tohua e rua ngā āhuatanga, ka whakanohoia te hua i roto i te operand №1. I roto i tenei take, rēhita he tauwhakaarotau №1 tika protrudes me tauwhakaarotau №2 - he pūtau rēhita mahara ranei. Ko e ano kia kōrero atu kōwhiringa:

IMUL

IMUL > ,

IMUL ,

He rite ki MUL i runga i te pūrere te kōwhiringa tuatahi, kia taea te pēnei te ture ki reira konei. taea te kōwhiringa tuarua ki a koe te whakapūtā āta te wāhi - rite te hua, me te take. I te toru o te whakatinanatanga āta te rēhita e ka waiho te take tuatahi, ka whakanohoia ai te te hua o te whakareatanga. I raro i te tauwhakaarotau tonu e kore e auraa ki te tautuhi i te rēhita ngā me te tau i ai ki te tini operand.

wehenga

Ka rite ki whakahuatia i runga ake, whakamahia ai hei tuwha i te kapa e rua. Hoki tau waitohu e whakamahia:

DIV

Hoki tau hainatia te whakamahi i te whakahau e whai ake nei:

IDIV

Taupānga ako āhuatanga wehenga ko e anake te kaiwehewehe operand, e mahi rite te rēhita mahara ranei pūtau. A vahi i te tau kua tona wāhi tino, e tei runga i te maha o te rahi tonu. He tona wahi, me te hua mahi.

Rapu me te whakamāramatanga o ngā wāhi e taea te mea i te taua rite te whakareatanga: titau te tuhinga motuhake, pera te nui o te kōrero, ko te nui.

mutunga whaihua

whakarōpūtia hoki rite "tohutohu huihui ngā āwhina" a kia ngā whakahau Neg . e ia he tohu i roto i te tau i te mea i roto i te tauwhakaarotau. Ko te katoa tumanako e kua awhinatia te tuhinga mahino koe te tauhanga whakahau assembler.

Na mahi pepa incrementing me decrementing (te whakanui ake ranei whakaiti wae operand). Hei nuku operand he tika ki te whakahau i te whakahau e whai ake nei:

INC

Hei decrement kia whakahau:

Dec

Ka rite ki taea te mahi i te operand tauwāhi mahara rēhita ranei. Ko painga motuhake o enei ngā mahi e tangohia e ratou ratou hoki iti iho wāhi atu tohutohu whakaminenga rite tapaea e tua tangohanga ranei.