le site de notre ami piotr<\/a> qui d\u00e9crit ce format :
\nJ’ai commenc\u00e9 gr\u00e2ce \u00e0 l’analyse de la ROM \u00e0 trouver quelques commandes :<\/p>\n 41h : Mantisse X - Mantisse Y\u00a0\n 10h : X <- 0\n 11h : Y <- 0\n 80h : SWAP ( X <-> Y)\n 0Eh :\n0448h:\n0448h : Shift Right Mantisse X\n04C0h : Mantisse X + Mantisse Y\n04C1h : Mantisse X - Mantisse Y\n044Ah :\n044Ch :\n04C2h, 04C3h, 0490h, 0491h, 0499h, 049Ch, 054Eh, 05D0h, 0800h, 0801h,<\/pre>\nUne fois cod\u00e9 en binaire, l’ensemble des commande a plus de sens :<\/p>\n
0\u00a0 \/\u00a0 1\nBit 0 : Add\u00a0 \/ Sub\nBit 1 :\u00a0 \u00a0 X \/ Y\u00a0 \u00a0\u00a0 \u00a0\u00a0 charge le registre interne avec X ou Y\nBit 2 : Right\/Left\u00a0 \u00a0\u00a0 \u00a0Sens du shift\nBit 3 : no\u00a0 \u00a0\/ Shift\nBit 4 :\u00a0 \u00a0Exponent\nBit 5 : ???????????\nBit 6 :\u00a0 \u00a0Mantisse\n00\u00a0 \u00a000000000\u00a0 \u00a0 Add exponent and sign\n01\u00a0 \u00a000000001\u00a0 \u00a0 Sub exponents sign (X-Y)\n41\u00a0 \u00a001000001\u00a0 \u00a0sub mantisse (X - Y)\n43\u00a0 \u00a001000011\u00a0 \u00a0sub mantisse (Y - X)\n48\u00a0 \u00a001001000\u00a0 \u00a0Shift Right and src X\u00a0\n4A\u00a0 \u00a001001010\u00a0 \u00a0Shift Right and src Y\n4C\u00a0 \u00a001001100\u00a0 \u00a0Shift Left\n4E\u00a0 \u00a001001110\u00a0 \u00a0Shift Left and src Y\n90\u00a0 \u00a010010000\u00a0 \u00a0Add Exp 1\n91\u00a0 \u00a010010001\u00a0 \u00a0Sub Exp 1\n99\u00a0 \u00a010011001\u00a0 \u00a0Shift Right and sub Exp 1\n9c\u00a0 \u00a010011100\u00a0 \u00a0Shift Left and add Exp 1\nC0\u00a0 \u00a011000000\u00a0 \u00a0Add Mantisse and src X\nC1\u00a0 \u00a011000001\u00a0 \u00a0Sub Mantisse and src X\nC2\u00a0 \u00a011000010\u00a0 \u00a0Add Mantisse and src Y\nC3\u00a0 \u00a011000011\u00a0 \u00a0Sub Mantisse and src Y\nD0\u00a0 \u00a011010000\u00a0 \u00a0Cpy X to internal register\nbit 0 : X\u00a0 \/\u00a0 Y\nbit 2 : Write reg\nbit 3 : exchange reg ???\nbit 4 : clear\nport 221:\n04\u00a0 \u00a000000100\u00a0 \u00a0Write reg to X\n05\u00a0 \u00a000000101\u00a0 \u00a0Write reg to Y\n08\u00a0 \u00a000001000\u00a0 \u00a0exchange reg and X ???\n0E\u00a0 \u00a000001110\u00a0 \u00a0exchange reg and X ???\n10\u00a0 \u00a000010000\u00a0 \u00a0clear X\n11\u00a0 \u00a000010001\u00a0 \u00a0clear Y\n80\u00a0 \u00a010000000\u00a0 \u00a0swap X Y<\/pre>\nDonc c’est assez simple. Il y a un registre interne qui peut \u00eatre charg\u00e9 et manipul\u00e9 par un OUT 220h.
\nUn out 221h permet d’\u00e9crire le registre interne sur X ou Y par les commandes 04h ou 05h. La commande 08h permet de faire un swap entre X et le registre interne.
\nTous les calculs positionnent aussi les flags Z et C qui sont lu par un IN 220h.
\nJe tiens \u00e0 remercie\u00a0dprtl <\/strong>(voir\u00a0http:\/\/silicium.org\/forum\/viewtopic.php?f=64&t=31900<\/a>) qui m’a permis de trouver ou v\u00e9rifier les diff\u00e9rentes commandes en tra\u00e7ant les fonctions sur un vrai Z-1 (eh oui, je n’ai pas encore la b\u00eate).
\nLe seul doute qui subsiste concerne les commandes 0800h, 0801h et 0Eh. Nous n’arrivons pas \u00e0 les tracer sur le vrai et il reste un petit bug dans l’\u00e9mulation de ces commandes qui m’a oblig\u00e9 \u00e0 la mise en place TEMPORAIRE d’un HACK dans l’\u00e9mulation (oui, je sais, c\u2019est MAL).
\nVoil\u00e0, Il reste encore beaucoup de chose \u00e0 trouver sur le Z-1, notamment les autres ports I\/O, mais un gros morceau \u00e0 \u00e9t\u00e9 fait avec la partie calcul.
\n![\"\"](\"http:\/\/pockemul.com\/forum\/z1gr-11.png\")
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<\/p>\n","protected":false},"excerpt":{"rendered":"Tous le monde connait le dernier des pockets Casio \u00e9quip\u00e9 d’un processeur 16 bits (le 80L188EB). Lorsque je me suis lanc\u00e9 dans l’\u00e9mulation de ce pocket, je pensais na\u00efvement que cela serai assez simple, le processeur \u00e9tant tr\u00e9s bien document\u00e9.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[30,31],"tags":[],"class_list":["post-417","post","type-post","status-publish","format-standard","hentry","category-casio","category-fx-890p"],"_links":{"self":[{"href":"https:\/\/pockemul.com\/index.php\/wp-json\/wp\/v2\/posts\/417"}],"collection":[{"href":"https:\/\/pockemul.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pockemul.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pockemul.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/pockemul.com\/index.php\/wp-json\/wp\/v2\/comments?post=417"}],"version-history":[{"count":2,"href":"https:\/\/pockemul.com\/index.php\/wp-json\/wp\/v2\/posts\/417\/revisions"}],"predecessor-version":[{"id":546,"href":"https:\/\/pockemul.com\/index.php\/wp-json\/wp\/v2\/posts\/417\/revisions\/546"}],"wp:attachment":[{"href":"https:\/\/pockemul.com\/index.php\/wp-json\/wp\/v2\/media?parent=417"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pockemul.com\/index.php\/wp-json\/wp\/v2\/categories?post=417"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pockemul.com\/index.php\/wp-json\/wp\/v2\/tags?post=417"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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