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+<TeXmacs|1.0.7.19>
+
+<style|generic>
+
+<\body>
+ <doc-data|<doc-title|Spécification processeur>>
+
+ Nous proposons ici une spécification pour un processeur minimaliste 16 bit
+ RISC.
+
+ <section|Registres>
+
+ La machine dispose de 8 registres \S généraux \T :
+
+ \;
+
+ <\itemize>
+ <item>0. Registre <verbatim|Z> ou zéro (valant tout le temps 0...)
+
+ <item>1. Registre <verbatim|A>
+
+ <item>2. Registre <verbatim|B>
+
+ <item>3. Registre <verbatim|C>
+
+ <item>4. Registre <verbatim|D>
+
+ <item>5. Registre <verbatim|E>, écrit par certaines instructions
+ (multiplication, division...) et utilisé préférentiellement comme
+ registre temporaire pour certaines instructions composées
+
+ <item>6. Registre <verbatim|F>, ou <verbatim|RA> (return adresse), écrit
+ par l'instruction <verbatim|jal>
+
+ <item>7. Registre <verbatim|G>, ou <verbatim|SP> (stack pointer), utilisé
+ par les instructions <verbatim|pop> et <verbatim|push>
+ </itemize>
+
+ De plus, le processeur dispose d'un registre non manipulable, le registre
+ <verbatim|PC> (program counter).
+
+ Les numéros de registres sont donc codés sur 3 bits.
+
+ <section|Mémoire>
+
+ La mémoire est adressée sur 16 bits, il y a donc 64ko disponnibles.
+
+ Différentes zones de mémoire sont à définir (ROM, RAM, MMIO)
+
+ <section|Jeu d'instruction>
+
+ Les instructions sont codées sur 16 bits.
+
+ <subsection|Types d'instructions>
+
+ <paragraph|Format de base><tabular*|<tformat|<cwith|2|2|1|-1|cell-lborder|1px>|<cwith|2|2|1|-1|cell-bborder|1px>|<cwith|2|2|1|-1|cell-tborder|1px>|<cwith|2|2|3|3|cell-rborder|1px>|<table|<row|<cell|5
+ bits>|<cell|3 bits>|<cell|8 bits>>|<row|<cell|<math|I>>|<cell|<math|R>>|<cell|<math|\<ldots\>>>>>>>
+
+ <paragraph|Format <math|R>><tabular*|<tformat|<cwith|2|2|1|-1|cell-lborder|1px>|<cwith|2|2|1|-1|cell-bborder|1px>|<cwith|2|2|1|-1|cell-tborder|1px>|<cwith|2|2|3|3|cell-rborder|1px>|<cwith|2|2|5|5|cell-rborder|1px>|<table|<row|<cell|5
+ bits>|<cell|3 bits>|<cell|3 bits>|<cell|3 bits>|<cell|2
+ bits>>|<row|<cell|<math|I>>|<cell|<math|R>>|<cell|<math|R<rsub|A>>>|<cell|<math|R<rsub|B>>>|<cell|<math|f>>>>>>
+
+ <paragraph|Format <math|I>><tabular*|<tformat|<cwith|2|2|1|-1|cell-lborder|1px>|<cwith|2|2|1|-1|cell-bborder|1px>|<cwith|2|2|1|-1|cell-tborder|1px>|<cwith|2|2|3|3|cell-rborder|1px>|<table|<row|<cell|5
+ bits>|<cell|3 bits>|<cell|8 bits>>|<row|<cell|<math|I>>|<cell|<math|R>>|<cell|<math|d>>>>>>
+
+ <paragraph|Format K><tabular*|<tformat|<cwith|2|2|1|-1|cell-lborder|1px>|<cwith|2|2|1|-1|cell-bborder|1px>|<cwith|2|2|1|-1|cell-tborder|1px>|<cwith|2|2|3|3|cell-rborder|1px>|<cwith|2|2|4|4|cell-rborder|1px>|<table|<row|<cell|5
+ bits>|<cell|3 bits>|<cell|3 bits>|<cell|5
+ bits>>|<row|<cell|<math|I>>|<cell|<math|R>>|<cell|<math|R<rprime|'>>>|<cell|<math|d>>>>>>
+
+ <paragraph|Format <math|J>><tabular|<tformat|<cwith|2|2|1|2|cell-lborder|1px>|<cwith|2|2|1|2|cell-bborder|1px>|<cwith|2|2|1|2|cell-tborder|1px>|<cwith|2|2|2|2|cell-rborder|1px>|<cwith|2|2|1|-1|cell-halign|c>|<table|<row|<cell|5
+ bits>|<cell|11 bits>>|<row|<cell|<math|I>>|<cell|<math|d>>>>>>
+
+ <section|Tableau d'instructions>
+
+ Certain noms d'instuctions sont en <em|italique>, il s'agit de signifier
+ qu'il s'agit d'un alias (optionnel) pour une autre instruction.
+
+ <big-table|<tabular*|<tformat|<cwith|1|1|1|-1|cell-bborder|1px>|<table|<row|<cell|<strong|<math|I>>>|<cell|<strong|format>>|<cell|<strong|<math|f>>>|<cell|<strong|description>>|<cell|<strong|action>>|<cell|<strong|valeurs
+ signés ?>>>|<row|<cell|00000>|<cell|R>|<cell|0>|<cell|add>|<cell|<math|R\<leftarrow\>R<rsub|A>+R<rsub|B>>>|<cell|signé>>|<row|<cell|>|<cell|>|<cell|1>|<cell|sub>|<cell|<math|R\<leftarrow\>R<rsub|A>-R<rsub|B>>>|<cell|signé>>|<row|<cell|>|<cell|>|<cell|2>|<cell|mul>|<cell|<math|R\<leftarrow\>lo<around*|(|R<rsub|A>\<times\>R<rsub|B>|)>>>|<cell|signé>>|<row|<cell|>|<cell|>|<cell|>|<cell|>|<cell|<math|E\<leftarrow\>hi<around*|(|R<rsub|A>\<times\>R<rsub|B>|)>>
+ si <math|E\<neq\>R>>|<cell|>>|<row|<cell|>|<cell|>|<cell|3>|<cell|div>|<cell|<math|R\<leftarrow\>q<around*|(|R<rsub|A>,R<rsub|B>|)>>>|<cell|signé>>|<row|<cell|>|<cell|>|<cell|>|<cell|>|<cell|<math|E\<leftarrow\>r<around*|(|R<rsub|A>,R<rsub|B>|)>>
+ si <math|E\<neq\>R>>|<cell|>>|<row|<cell|00001>|<cell|R>|<cell|0>|<cell|addu>|<cell|idem
+ add>|<cell|non signé>>|<row|<cell|>|<cell|>|<cell|1>|<cell|subu>|<cell|idem
+ sub>|<cell|non signé>>|<row|<cell|>|<cell|>|<cell|2>|<cell|mulu>|<cell|idem
+ mul>|<cell|non signé>>|<row|<cell|>|<cell|>|<cell|3>|<cell|divu>|<cell|idem
+ div>|<cell|non signé>>|<row|<cell|00010>|<cell|R>|<cell|0>|<cell|or>|<cell|<math|R\<leftarrow\><around*|(|R<rsub|A>\<vee\>R<rsub|B>|)>>>|<cell|>>|<row|<cell|>|<cell|>|<cell|1>|<cell|and>|<cell|<math|R\<leftarrow\><around*|(|R<rsub|A>\<wedge\>R<rsub|B>|)>>>|<cell|>>|<row|<cell|>|<cell|>|<cell|2>|<cell|xor>|<cell|<math|R\<leftarrow\><around*|(|R<rsub|A>\<oplus\>R<rsub|B>|)>>>|<cell|>>|<row|<cell|>|<cell|>|<cell|3>|<cell|nor>|<cell|<math|R\<leftarrow\>not
+ <around*|(|R<rsub|A>\<vee\>R<rsub|B>|)>>>|<cell|>>|<row|<cell|00011>|<cell|R>|<cell|0>|<cell|lsl>|<cell|<math|R\<leftarrow\><around*|(|R<rsub|A>\<ll\>R<rsub|B>|)>>>|<cell|>>|<row|<cell|>|<cell|>|<cell|1>|<cell|<em|lsl>>|<cell|>|<cell|>>|<row|<cell|>|<cell|>|<cell|2>|<cell|lsr>|<cell|<math|R\<leftarrow\><around*|(|R<rsub|A>\<gg\>R<rsub|B>|)>>
+ (logical)>|<cell|(non signé)>>|<row|<cell|>|<cell|>|<cell|3>|<cell|asr>|<cell|<math|R\<leftarrow\><around*|(|R<rsub|A>\<gg\>R<rsub|B>|)>>
+ (arith)>|<cell|(signé)>>|<row|<cell|00100>|<cell|R>|<cell|0>|<cell|<em|se>>|<cell|>|<cell|>>|<row|<cell|>|<cell|>|<cell|1>|<cell|<em|sne>>|<cell|>|<cell|>>|<row|<cell|>|<cell|>|<cell|2>|<cell|se>|<cell|<math|R\<leftarrow\><around*|(|R<rsub|A>=R<rsub|B>?1:0|)>>>|<cell|>>|<row|<cell|>|<cell|>|<cell|3>|<cell|sne>|<cell|<math|R\<leftarrow\><around*|(|R<rsub|A>\<neq\>R<rsub|B>?1:0|)>>>|<cell|>>|<row|<cell|00101>|<cell|R>|<cell|0>|<cell|slt>|<cell|<math|R<rsub|>\<leftarrow\><around*|(|R<rsub|A>\<less\>R<rsub|B>?1:0|)>>>|<cell|signé>>|<row|<cell|>|<cell|>|<cell|1>|<cell|sle>|<cell|<math|R\<leftarrow\><around*|(|R<rsub|A>\<leqslant\>R<rsub|B>?1:0|)>>>|<cell|signé>>|<row|<cell|>|<cell|>|<cell|2>|<cell|sltu>|<cell|<math|R<rsub|>\<leftarrow\><around*|(|R<rsub|A>\<less\>R<rsub|B>?1:0|)>>>|<cell|non
+ signé>>|<row|<cell|>|<cell|>|<cell|3>|<cell|sleu>|<cell|<math|R\<leftarrow\><around*|(|R<rsub|A>\<leqslant\>R<rsub|B>?1:0|)>>>|<cell|non
+ signé>>|<row|<cell|00110>|<cell|I>|<cell|>|<cell|incri>|<cell|<math|R\<leftarrow\><around*|(|R+d|)>>>|<cell|<math|d>
+ signé>>|<row|<cell|00111>|<cell|I>|<cell|>|<cell|shi>|<cell|<math|R\<leftarrow\><around*|(|R\<ll\>d|)>>>|<cell|<math|d>
+ signé>>|<row|<cell|01000>|<cell|J>|<cell|>|<cell|j>|<cell|<math|PC\<leftarrow\>PC+d>>|<cell|>>|<row|<cell|01001>|<cell|J>|<cell|>|<cell|jal>|<cell|<math|F\<leftarrow\><around*|(|PC+2|)>
+ ; PC\<leftarrow\>PC+d>>|<cell|>>|<row|<cell|01010>|<cell|R<math|>>|<cell|0>|<cell|jr>|<cell|<math|PC\<leftarrow\>R>>|<cell|>>|<row|<cell|>|<cell|<math|>>|<cell|1>|<cell|jalr>|<cell|<math|><math|F\<leftarrow\><around*|(|PC+2|)>
+ ; PC\<leftarrow\>R>>|<cell|>>|<row|<cell|>|<cell|>|<cell|2>|<cell|jer>|<cell|if
+ <math|R<rsub|A>=R<rsub|B>> then <math|PC\<leftarrow\>R<rsub|>>>|<cell|>>|<row|<cell|>|<cell|>|<cell|3>|<cell|jner>|<cell|if
+ <math|R<rsub|A>\<neq\>R<rsub|B>> then <math|PC\<leftarrow\>R<rsub|>>>|<cell|>>|<row|<cell|01011>|<cell|R>|<cell|0>|<cell|jltr>|<cell|if
+ <math|R<rsub|A>\<less\>R<rsub|B>> then <math|PC\<leftarrow\>R<rsub|>>>|<cell|signé>>|<row|<cell|>|<cell|>|<cell|1>|<cell|jler>|<cell|if
+ <math|R<rsub|A>\<leqslant\>R<rsub|B>> then
+ <math|PC\<leftarrow\>R<rsub|>>>|<cell|signé>>|<row|<cell|>|<cell|>|<cell|2>|<cell|jltru>|<cell|if
+ <math|R<rsub|A>\<less\>R<rsub|B>> then <math|PC\<leftarrow\>R<rsub|>>>|<cell|non
+ signé>>|<row|<cell|>|<cell|>|<cell|3>|<cell|jleru>|<cell|if
+ <math|R<rsub|A>\<leqslant\>R<rsub|B>> then
+ <math|PC\<leftarrow\>R<rsub|>>>|<cell|non
+ signé>>|<row|<cell|01100>|<cell|>|<cell|>|<cell|>|<cell|>|<cell|>>|<row|<cell|01101>|<cell|>|<cell|>|<cell|>|<cell|>|<cell|>>|<row|<cell|01110>|<cell|>|<cell|>|<cell|>|<cell|>|<cell|>>|<row|<cell|01111>|<cell|>|<cell|>|<cell|>|<cell|>|<cell|>>|<row|<cell|10000>|<cell|K>|<cell|>|<cell|lw>|<cell|<math|R\<leftarrow\>mem<around*|(|R<rprime|'>+d|)>>
+ (16 bits)>|<cell|>>|<row|<cell|10001>|<cell|K>|<cell|>|<cell|sw>|<cell|<math|mem<around*|(|R<rprime|'>+d|)>\<leftarrow\>R>
+ (16 bits)>|<cell|>>|<row|<cell|10010>|<cell|K>|<cell|>|<cell|lb>|<cell|<math|R\<leftarrow\>mem<around*|(|R<rprime|'>+d|)>>
+ (8 bits)>|<cell|>>|<row|<cell|10011>|<cell|K>|<cell|>|<cell|sb>|<cell|<math|mem<around*|(|R<rprime|'>+d|)>\<leftarrow\>R>
+ (8 bits)>|<cell|>>|<row|<cell|10100>|<cell|R>|<cell|*>|<cell|lwr>|<cell|<math|R\<leftarrow\>mem<around*|(|R<rsub|A>+R<rsub|B>|)>>
+ (16 bits)>|<cell|>>|<row|<cell|10101>|<cell|R>|<cell|*>|<cell|swr>|<cell|<math|mem<around*|(|R<rsub|A>+R<rsub|B>|)>\<leftarrow\>R>
+ (16 bits)>|<cell|>>|<row|<cell|10110>|<cell|R>|<cell|*>|<cell|lbr>|<cell|<math|R\<leftarrow\>mem<around*|(|R<rsub|A>+R<rsub|B>|)>>
+ (8 bits)>|<cell|>>|<row|<cell|10111>|<cell|R>|<cell|*>|<cell|sbr>|<cell|<math|mem<around*|(|R<rsub|A>+R<rsub|B>|)>\<leftarrow\>R>
+ (8 bits)>|<cell|>>|<row|<cell|11000>|<cell|I>|<cell|>|<cell|lil>|<cell|<math|R<rsub|lo>\<leftarrow\>d>>|<cell|>>|<row|<cell|11001>|<cell|I>|<cell|>|<cell|lilz>|<cell|<math|R<rsub|lo>\<leftarrow\>d
+ ; R<rsub|hi>\<leftarrow\>0>>|<cell|>>|<row|<cell|11010>|<cell|I>|<cell|>|<cell|liu>|<cell|<math|R<rsub|hi>\<leftarrow\>d>>|<cell|>>|<row|<cell|11011>|<cell|I>|<cell|>|<cell|liuz>|<cell|<math|R<rsub|hi>\<leftarrow\>d
+ ; R<rsub|lo>\<leftarrow\>0>>|<cell|>>|<row|<cell|11100>|<cell|>|<cell|>|<cell|>|<cell|>|<cell|>>|<row|<cell|11101>|<cell|>|<cell|>|<cell|>|<cell|>|<cell|>>|<row|<cell|11110>|<cell|>|<cell|>|<cell|>|<cell|>|<cell|>>|<row|<cell|11111>|<cell|>|<cell|>|<cell|<samp|>>|<cell|>|<cell|>>>>>|Instructions
+ reconnues par le microproceseur>
+
+ <big-table|<tabular|<tformat|<cwith|1|1|1|-1|cell-bborder|1px>|<table|<row|<cell|<strong|Nom>>|<cell|<strong|Action>>|<cell|<strong|Code
+ assembleur de base équivalent>>>|<row|<cell|push
+ <math|R>>|<cell|<math|G\<leftarrow\>G-2 ;mem<around*|(|G|)>\<leftarrow\>R
+ >>|<cell|incri <math|G,-2>>>|<row|<cell|>|<cell|>|<cell|sw
+ <math|R\<nocomma\>>, <math|G>>>|<row|<cell|pop
+ <math|R>>|<cell|<math|R\<leftarrow\>mem<around*|(|G|)> ;
+ G\<leftarrow\>G+2>>|<cell|lw <math|R>, <math|G>>>|<row|<cell|>|<cell|>|<cell|incri
+ <math|G>, 2>>|<row|<cell|move <math|R,R<rsub|A>>>|<cell|<math|R\<leftarrow\>R<rsub|A>>>|<cell|add
+ <math|R>, <math|R<rsub|A>>, <math|Z>>>|<row|<cell|addi, subi,
+ ...>|<cell|<math|R\<leftarrow\>R<rsub|A>+d>>|<cell|(utilise E comme
+ registre temporaire)>>|<row|<cell|not <math|R,R<rsub|A>>>|<cell|<math|R\<leftarrow\>not
+ R<rsub|A>>>|<cell|<math|nor R,R<rsub|A>,Z>>>|<row|<cell|jz <math|R>,
+ addr>|<cell|if <math|R=0> then <math|PC\<leftarrow\>addr>>|<cell|lil E,
+ lo(addr) ; liu E, hi(addr) OU lilz E, addr>>|<row|<cell|>|<cell|>|<cell|jer
+ R, E, Z>>|<row|<cell|jnz <math|R>, addr>|<cell|if <math|R\<neq\>0> then
+ <math|PC\<leftarrow\>addr>>|<cell|lil E, lo(addr) ; liu E, hi(addr) OU lilz
+ E, addr>>|<row|<cell|>|<cell|>|<cell|jner R, E, Z>>>>>|Instructions
+ supplémentaires (produites par l'assembleur)>\
+</body>
+
+<\initial>
+ <\collection>
+ <associate|language|french>
+ </collection>
+</initial>
+
+<\references>
+ <\collection>
+ <associate|auto-1|<tuple|1|1>>
+ <associate|auto-10|<tuple|4|1>>
+ <associate|auto-11|<tuple|1|2>>
+ <associate|auto-12|<tuple|2|3>>
+ <associate|auto-2|<tuple|2|1>>
+ <associate|auto-3|<tuple|3|1>>
+ <associate|auto-4|<tuple|3.1|1>>
+ <associate|auto-5|<tuple|1|1>>
+ <associate|auto-6|<tuple|2|1>>
+ <associate|auto-7|<tuple|3|1>>
+ <associate|auto-8|<tuple|4|1>>
+ <associate|auto-9|<tuple|5|1>>
+ </collection>
+</references>
+
+<\auxiliary>
+ <\collection>
+ <\associate|table>
+ <tuple|normal|Instructions reconnues par le
+ microproceseur|<pageref|auto-11>>
+
+ <tuple|normal|Instructions supplémentaires (produites par
+ l'assembleur)|<pageref|auto-12>>
+ </associate>
+ <\associate|toc>
+ <vspace*|1fn><with|font-series|<quote|bold>|math-font-series|<quote|bold>|Registres>
+ <datoms|<macro|x|<repeat|<arg|x>|<with|font-series|medium|<with|font-size|1|<space|0.2fn>.<space|0.2fn>>>>>|<htab|5mm>>
+ <no-break><pageref|auto-1><vspace|0.5fn>
+
+ <vspace*|1fn><with|font-series|<quote|bold>|math-font-series|<quote|bold>|Mémoire>
+ <datoms|<macro|x|<repeat|<arg|x>|<with|font-series|medium|<with|font-size|1|<space|0.2fn>.<space|0.2fn>>>>>|<htab|5mm>>
+ <no-break><pageref|auto-2><vspace|0.5fn>
+
+ <vspace*|1fn><with|font-series|<quote|bold>|math-font-series|<quote|bold>|Jeu
+ d'instruction> <datoms|<macro|x|<repeat|<arg|x>|<with|font-series|medium|<with|font-size|1|<space|0.2fn>.<space|0.2fn>>>>>|<htab|5mm>>
+ <no-break><pageref|auto-3><vspace|0.5fn>
+
+ <with|par-left|<quote|1.5fn>|Types d'instructions
+ <datoms|<macro|x|<repeat|<arg|x>|<with|font-series|medium|<with|font-size|1|<space|0.2fn>.<space|0.2fn>>>>>|<htab|5mm>>
+ <no-break><pageref|auto-4>>
+
+ <with|par-left|<quote|6fn>|Format de base
+ <datoms|<macro|x|<repeat|<arg|x>|<with|font-series|medium|<with|font-size|1|<space|0.2fn>.<space|0.2fn>>>>>|<htab|5mm>>
+ <no-break><pageref|auto-5><vspace|0.15fn>>
+
+ <with|par-left|<quote|6fn>|Format <with|mode|<quote|math>|R>
+ <datoms|<macro|x|<repeat|<arg|x>|<with|font-series|medium|<with|font-size|1|<space|0.2fn>.<space|0.2fn>>>>>|<htab|5mm>>
+ <no-break><pageref|auto-6><vspace|0.15fn>>
+
+ <with|par-left|<quote|6fn>|Format <with|mode|<quote|math>|I>
+ <datoms|<macro|x|<repeat|<arg|x>|<with|font-series|medium|<with|font-size|1|<space|0.2fn>.<space|0.2fn>>>>>|<htab|5mm>>
+ <no-break><pageref|auto-7><vspace|0.15fn>>
+
+ <with|par-left|<quote|6fn>|Format K
+ <datoms|<macro|x|<repeat|<arg|x>|<with|font-series|medium|<with|font-size|1|<space|0.2fn>.<space|0.2fn>>>>>|<htab|5mm>>
+ <no-break><pageref|auto-8><vspace|0.15fn>>
+
+ <with|par-left|<quote|6fn>|Format <with|mode|<quote|math>|J>
+ <datoms|<macro|x|<repeat|<arg|x>|<with|font-series|medium|<with|font-size|1|<space|0.2fn>.<space|0.2fn>>>>>|<htab|5mm>>
+ <no-break><pageref|auto-9><vspace|0.15fn>>
+
+ <vspace*|1fn><with|font-series|<quote|bold>|math-font-series|<quote|bold>|Tableau
+ d'instructions> <datoms|<macro|x|<repeat|<arg|x>|<with|font-series|medium|<with|font-size|1|<space|0.2fn>.<space|0.2fn>>>>>|<htab|5mm>>
+ <no-break><pageref|auto-10><vspace|0.5fn>
+ </associate>
+ </collection>
+</auxiliary> \ No newline at end of file
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 13:13:34 +0000