Z80をRustで動かすまで年が越せない

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lͥͬͱ͸ͪ·Δz lͥͬͺͪz w ೥ൃചͷCJU$16 w ࠓͰ΋ങ͑Δʢ੡଄தʣ w ઃܭ͸βΠϩάࣾ w ΊͪΌͪ͘ΌചΕܼͨ࡞ w ύοέʔδ͸%*1ϐϯ w ࠓ΋ੲ΋ϚχΞʹਓؾ w ΋͸΍ڭཆ ;ͱ͸

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౰࣌ͷࣄ৘͸͋Γͭͭ΋؆ܿ w ిݯ͸୯Ұ7 w ৴߸͸ܭຊ w ΫϩοΫೖྗ w ΞυϨεઢຊ σʔλઢຊ w ϝϞϦ੍ޚ৴߸ຊ w $16੍ޚ৴߸ຊ w %."༻৴߸ຊ ΠϯλʔϑΣʔε https://www.zilog.com/docs/z80/um0080.pdf

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$16͸͍͔ʹͯ͠ಈ͔͘ ͋Δ͍͸ϊΠϚϯܕܭࢉػͷ͘͢͝ద౰ͳઆ໌ w ΞυϨεόεͱσʔλόεΛ༻͍ͯ σʔλΛಡΜͩΓॻ͍ͨΓͰ͖Δ w ໋ྩ΋͜ΕΒͷόεܦ༝Ͱ30.ͱ͔ 3".͔ΒಡΈग़͢ w ֎෦ͱͷೖग़ྗ΋όεܦ༝ w ໋ྩͲ͓ΓʹόεΛಡΈॻ͖͢Δ ͜ͱ͕$16ͷશͯ CPU RAM IO ΞυϨεόε σʔλόε ͦͷଞ ඞཁͳ੍ޚ৴߸ ΩʔϘʔυͱ͔ ը໘ͱ͔ ROM

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ͭ·Γɺ ܭࢉػͱ͸όε͕͢΂ͯͰ͋Δ ʢաݴʣ

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;ͷڭՊॻతͳ࢖͍͔ͨ 4*0 1*0 $5$ͱ͍ͬͨपลճ࿏ϑΝϛϦ*$Λ઀ଓ͢Δ Z80 RAM ROM SIO PIO CTC ͦͷଞ ΩʔϘʔυͱ͔ ը໘ͱ͔ γϦΞϧ ௨৴ ύϥϨϧ ௨৴ λΠϚʔ

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Ͱ΋ɺόε͕͢΂ͯͳͷͰ ʢաݴʣ

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Ͱ΋ɺόε͕͢΂ͯͳͷͰ Z80 RAM ROM SIO PIO CTC ͦͷଞ ΩʔϘʔυͱ͔ ը໘ͱ͔ γϦΞϧ ௨৴ ύϥϨϧ ௨৴ λΠϚʔ

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Ͱ΋ɺόε͕͢΂ͯͳͷͰ όεʹ઀ଓ͢ΔڊେͳԿ͔Ͱ͢΂ͯΛ୅ସͯ͠΋ߏΘͳ͍ Z80 RAM ROM SIO PIO CTC ڊେͳԿ͔ ΩʔϘʔυͱ͔ ը໘ͱ͔ γϦΞϧ ௨৴ ύϥϨϧ ௨৴ λΠϚʔ

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·ͨͷ໊Λ3BTQCFSSZ1J1JDP w ࠷ۙྲྀߦͷϚΠίϯϘʔυ w ೥୅ͷٕज़ w 3". 30. *0౳ͷ໾Λԋ͡Δ w ;ͷඦഒ͘Β͍ੑೳ͕͍͍ w ;͸ϩϚϯ୲౰ w ࣗ༝ʹ࢖͑Δϐϯ਺͸ຊ ʮڊେͳԿ͔ʯ https://www.raspberrypi.com/products/raspberry-pi-pico/

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ຊ଍Βͳ͍

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அࣺ཭ͷ͓࣌ؒͰ͢

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ҙ֎ͱෆཁͳ৴߸͸ଟ͍ w */5 /.*ׂΓࠐΈؔ࿈ͷϐϯ ‎ׂΓࠐΈ࢖Θͳ͍ͷͰෆཁ w #64\32 "$,^%."ؔ࿈ͷϐϯ ‎%."͠ͳ͍ͷͰෆཁ w )"-5$16ͷ)"-5Λࣔ͢ϐϯ ‎ؾʹ͠ͳ͍ͷͰෆཁ w *032*0ཁٻΛࣔ͢ϐϯ ‎࢖Θͳ͍ͷͰෆཁ ඞཁͳϐϯΛݫબ https://www.zilog.com/docs/z80/um0080.pdf

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ҙ֎ͱෆཁͳ৴߸͸ଟ͍ w .ϝϞϦཁٻ໋͕ྩϑΣον ‎۠ผ͠ͳ͍͍ͯ͘ͷͰෆཁ w 83ϝϞϦཁٻ͕ॻ͖ࠐΈ ‎3%Ͱͳ͚Ε͹83ͳͷͰෆཁ ඞཁͳϐϯΛݫબ https://www.zilog.com/docs/z80/um0080.pdf

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ຊ࡟Εͨ ʢ·ͩຊ଍Βͳ͍ʣ

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1J1JDPʹ৐ͬͯΔνοϓ w ຊདྷ(1*0͸ຊ w 1J1JDPͰ͸ຊ͕ෆࣗ༝ w (1*0Ϙʔυ্ͷ-&%ઐ༻ w (1*074:4ిѹܭଌઐ༻ w શ෦ͷϐϯ͕ࣗ༝ͳΒ଍ΓΔʂ 31 https://www.raspberrypi.com/products/raspberry-pi-pico/

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ळ݄ిࢠ௨঎͕࡞ͬͨϘʔυ w νοϓ͸31 w 1J1JDPͱಉ͡ιϑτ͕ಈ͘ w (1*0͕ຊશ෦ग़ͯΔʂʂʂ "&31 https://akizukidenshi.com/catalog/g/gK-17542/

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ͱ͜ΖͰɺ ;ͱ31͸௚݁ͯ͠ ͍͍ͷͰ͠ΐ͏͔ʁ

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Z80 RP2040 ≤7*-≤ ≤7*)≤7$$ ≤70-≤ ≤70)≤ ௚݁0, ≤7*-≤ ≤7*)≤ ී௨ͷೖྗ յΕΔ ී௨ͷग़ྗ ≤7*-≤ 7$$≤7*)≤7$$ ಈ͔ͳ͍ ΫϩοΫೖྗ ≤70-≤ ≤70)≤7$$ ≤70-≤ ≤70)≤ ϨϕϧγϑλΛ ೖΕͯղܾ ͱͯ΋ࠔΔ

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7ೖΕͯ΋ յΕͳ͍આ ໺൮ͳԾઆʢر๬ʣ

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https://forums.raspberrypi.com/viewtopic.php?p=2092122#p2091977

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https://forums.raspberrypi.com/viewtopic.php?p=2092122#p2091977 w ݪଇͱͯ͠ɺσʔλγʔτ௨Γʹઃܭ͢Δͷ͕͓͢͢Ί w σʔλγʔτ֎ͷ࢖͍ํ͸ࣗݾ੹೚Ͱ w ࣮͸΋͏ͪΐͬͱ޿͍ൣғͷిѹΛड͚෇͚ΒΕΔ w "%$ͷ͋Δϐϯ͸ɺ*07%% 7 ·Ͱʢ&4%μΠΦʔυ͕͋ΔͷͰʣ w "%$ͷͳ͍ϐϯ͸ɺ*07%%7ͷͱ͖7·Ͱ w ʮ7τϨϥϯτʯ͸7ʹ଱͑Δ͜ͱΛࢦ͢ͷͰɺ ͜Ε͸ʮ7τϨϥϯτʯͱ͸ݺ͹ͳ͍ w 7ˠ7ͷॱͰిݯ౤ೖ͞ΕΔΑ͋͘Δઃܭͩͱɺ ిݯ౤ೖ࣌ʹμϝʔδ͕ೖΔΑ w ࢓༷ҧ൓Ͱ΋͙͢ʹ͸յΕͳ͍͔΋͠Εͳ͍͕ɺ࣌ؒͱͱ΋ʹμϝʔδೖͬͯ յΕΔ͔΋Α

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ʢ"%$ͳ͍ϐϯ͸ʣ 7ೖΕͯ ͍͍ͬͯʂ ʢ֦େղऍɾࣗݾ੹೚ɾյΕͯ΋ٽ͔ͳ͍ʣ

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୆ຊ͸͜͜·Ͱ