Spectrum Expert#2
(c) LD,(c) DANGEROUS
create U#74 24.11.02

                   ZX-BUS. a ().

     ᫨ a a a a a  a  a  
a饭 a,  a 㤥 a 宩  a  -
 孨᪮. ᫨ , ᨢ  a  ⨢, 訫 ᤥa
 ᢮ a a ,  a a  a.
      ⮢ ନ஢a⥫  設  ॡ  ᪮쪮
襢 aa  奬.    롮  ਨ  奬
ᥣa ᫥ ६   த饩.  ।  -
⢥ ⨬a aa  1533,    555.  -
㥬 a 奬 நa aa "aa"  (-
 555, ⨯   㪢 ""  㦮窥,    -
⨯a), a a  a a । ⢥.
     , aa a   aa,  ᪮
a⨪a aaa,  a aa aਯaa  a  -
奬a a  ⢥ (aਮ⨧   㬥⥭  -
  ᥡ a).  ᮮ⢥⢨ ᯮ㥬 -
奬   ᪨  ਢ :

 15336  = 74LS245, 74ALS245, 74F245
 153315 = 74LS251, 74ALS251, 74F251
 15331  = 74LS02, 74ALS02, 74F02

     奬 6 ᮡ       IBM  
 䨣権...  ⮬, ᫨      
  ⢠  386 - ᬥ 믠 6   -
 ! a a  奬!!!      
ਯaﭮ a⢮, a祭aa  ᡮﬨ.  , ᫨  㬥
ࠧ .. "栭" 쪨 -  ᬥ  ⠢; -
   砥  㤥.
      a  /  ४㥬  a졫஢  -
a  0.1  .    ஢  (6)  a  a
a⥫쭮!   ਨ a, a  ௨a  a  -
-15-96, a ᨭ,    來  aᯮ  a
a.
     ᯮ짮a aa  aꥬ a  ४-
㥬,᪮   a    aa  ᮮ⢥  -
⢥ aa. (  ᪠  蠣 
2.5 , ⮣         ᯮ  蠣
2.54 .   30 ⠪⮢  1.2  ,    ॡ  
᭠஬, ⮡   窮  ࠧ' ⠪, ⮡
祣  몠.   ISA-ࠧ'   386- 
,     㬥⭠ :) ⢥ aꥬ
 㯨 a뭪,     ᪨  ZX-.  
a,   aꥬ ᪮쪮 , 祬  㦭,  ⮬
  १a  a (  ᯥ宬   㤥
ᯮ짮a  祭 ᪮a).

                 奬a 設 ନ஢a⥫.
Ŀ
 Screen1              
 BusShema.scr(bmp,jpg)

ਬa  奬.

 1. a 奬   設 ᨣa, a (a  奬) 
設a யa (   a  ᨣa,  
ନ ७ 奬a a); a (aa) 
 設a, a  a ਩ னa.   
 設 뢠 , ⮫쪮  ᨣ, 室騬 
譨 ᫮, ᯥ। ᠭ "." (窠).

 2.  ᨣa, 室騥   設,    -
७  a னa,   뢮  a  aꥬ
設 (DDIR, 5, VC).

 3.  ⮫ "pin" aa   யa  Z80,  
 ᨣa a ⮨ "-", aa騩,  a  ᨣa
ନ  奬  㦥  யa,        a
஢ a ᤥaa -a.

 4. 冷  ⮫殬 "pin"  ⮫ "name"   "bus",    
aa a ᨣa  (᮪a饭)      aa  ᫮a,
ᮮ⢥騩 a ᨣa.

 5.  a⢥ 奬, 室    a  ன⢮,  
 ᯮ짮a 奬 ਩ 555  1533, 祬 ।-
⥫쭥 ஥.

 6.  ᨣa, 室騥 a 設,  ᯮ   -
   ਩ ன.      aa,
   㦭. 뭮 ਨ ﭭ a, , -
 , a-      ᨣa    ᯮ짮a  
a쭥襬.  ⨬ ᨣaa ⭮:
   NMI, INT, BUSRQ,  CROM,  CRGE, RAS, DOS, DCGE.
a  ᨣa  ᯮ    ஫  SMUC,  
a ᪫⥫쭮  ௨a, ⮬, ᫨   
 ᯮ짮a,  a  ᨣa.


    aᯮ  a⮢  a aa⭮ ᫮ a७.

     a  㦥  ਫ, ᫮ ।a ᮡ aꥬ ...
 設 aꥬ     a  a,  ⮡    a
a७ 뫨  aﬨ      ஭.  aﭨ
 aꥬa     3 , a  
aa  䫨    ਩묨  aa.
     a ZXBUS-᫮⮢ aa,  ᨣa a  "A"  
室  aꥬa a, ⮡  ᮥ   aa
a ਩ aa,  aᯮ묨    ஭  aa,  a
ᨣa a "B" -  aa  ஭ a.
 ,    ⮩ a -  ᮮ⢥⢨   aa⮬,
a ਩ aa a쪨 a "A" aᯮ  a  ஭
aa , a a "B" - a ஭ a.  a aꥬ  㬥a
a⮢ a稭a ᫥a aa, ᫨ a aꥬ  뢮a
,  "B"  ᥡ.


                    aa  樨.

  ᫨  a襩 a設 㦥 ।ᬮ७ ᫮  a७(SCORPION,
KAY),  aaa 祭 ᢮  ᮥ 室  (
 奬) 設 னa  設 a  a  (a  
a),  ⮬ 室a 設a  னa  (aa    奬)
a  a⮬  뢮 a ᫮  a७.  
 ஢  奬 ᠬ 設   !   -
 㦥 뢥  ⥬ 設.  ᫨    㦥  a  
a⥫ 設 by ௨,   aᯮ a 奬  a
, ।a⥫쭮 a  a譨 奬.
 ᫨ a    ᫮a, a 㦭 a   ᨣa,
ॡ㥬 a ன⢮, ᮥ   ( 奬)  -
 னa, a a( 奬)  設  னa  뢥  a
᫮.   ⮬ 室 ᯮ짮a ஢a a쭮 -
.

     ᨣa,  ॡ㥬  ன⢮,  ᭨a  -
।⢥   Z80,   ਤ ନ஢a ᯥ-
a쭮.

 ᨣaa,  ॡ騬 ⤥쭮 室a, ⭮:
    IORQ, IOGE, NMI, INT, BURQ, WAIT, CROM, CRGE, RAS, DOS, DCGE.

 a DCGE aa ⮫쪮    ௨a    a,  aa
a a設   a a a ன⢮ ᨣa "-
騩" (GND).

 a ᮧa  a襬  a  ᨣa,  aa  a
㭪:
 Ŀ
 Screen2              
                      
 SignForm.scr(bmp,jpg)
 
ਬ砭  ⮩ 奬.
  १ - 360...430 .
    " 奬 ZX" ࠧ㬥 ᫥饥:
    ய, ⨬, ࢠ  奬 -  "WAIT".
 奬 ,  ᨣ, 騩    ,    
१ ( 奬 ⨪).     ࠧ뢠  
१,  १ 砥 ᨣ "WAIT".  ,  
ᨣ  אַ   .
 ..   "WAIT"     १    ஢,
ᮥ騩  "WAIT" ⥫ 設. 筮  㣨
ᨣ.

奬  -  奬 K5655  5657,  ⠭-
  襬 .

   DOS      設.      뢠
DOS, EDOS, DOSE,DOSEN, CSDOS, DCDOS   -.  ᫨ 
 㤠  ⠪ ᨣ  奬,  ⠪  (᫨  奬
 , ᫥ ஦   ):    奬  㦥
஫ ᪮  /  1552/5552/15332/5312,
쬠      奬 2 (, 
2  2 ⮨  祣-).   室 ⮩ 2  
ᨣ DOS.
    ᯮᮡ ᪠ ⮣ ᨣ:  設   
 1  /27512    롮થ 27256,  ⠪  -
樨 ᨣ IORQ.


  奬 롮ન  (ROM) 襣        -
訥  ஡.  ᫨    襩  設    ⠭    
/27512/27512,   , ᮣ᭮ 奬.  ᤥ  -
ன 筮,     ਠ.᫨  -
襬  ᪮쪮 /  (ਠ: 2764,  27128,  27256,
2),    ᨣ ࠢ (CS  OE), 騩  
, ⠭  設.  ⠪,   :
 Ŀ
 Screen3              
                      
 ROMenabl.scr(bmp,jpg)
 
⠬,  ᠭ: "⠪  뫮", ࠧ㬥 "⠪  ⠢".
     ,   ०, 360...430 
      ᨣ "CS/OE" ࠧ㬥       ᨣ,
  騬   奬 .  ⮬ ⠭
奬     祭  (,  ⨬,    /
27256     2764   27128   ஫,  
 -).  祭 ᨣ CROM    CRGE  뢮  
ࠧ'.


                         .

     ᫨ ᫥ 祭   ன⢠    砫
 ᡮ, ,  易    ॣ㦥  設  Z80
 ᠬ ;  ⮬ ⥫쭠 㧪  
奬 ஢ ९  ௥  ய.  
ᯮ,  室 Z80 易    -室;  
設⢥ 㬮  ﭥ  ⪠...  ᫨ 設   
"࡮",  㡫.
    室  -  ய   /.
 ४㥬 Z84C010PEC,   Z84C008  006, ᫨ ⠪
  㤠,  Z80H (Z84008).
       設⢥ 砥     ⮫쪮  -
  (設  ࠡ⠥  ),   -
 । (ࠧ   設 ᠥ      -
), .. 蠥  .


  a祭 a a ਢ aa祭 a  ᨣaa
                      aa⭮ ZX-設.

  ਣ a aa稪a ਨ,  a    ᥬ,
⨣a騬 a ய୮ 孨.

  A0...A15
  ADDRESS BUS 0 ... ADDRESS BUS 15. 室.
a aa யa, 16 
a⨢ ᪨ ஢ -  "1".
 a室   ﭨ 뢮a,   a⨢(-
a᭮,  쥬 ﭨ)  ⮩ 設 ய
ᮮa a 奬a a,  a 祩 a  
 a ⮬ a/뢮a  ᥩa aa.



  D0...D7
  DATA BUS 0 ... DATA BUS 7.   室/室.
a a யa, 8 .
a⨢ ᪨ ஢  - "1".
 a室  ﭨ: , 뢮, a⨢a.
 ⮩ 設 ய ਭa  ।a a   a
 ன⢮ a/뢮a.

  RES
  RESET, . 室.
 a யa.
A⨢ ᪨ ஢ - "0".
( aa,  㭪 "" a⨢ ⮣a, a a
⮩  㤥 "0").   aa a    -
ய a稭a 믮 ணa  aa #0000.

  NMI
  NON-MASKABLE INTERRUPT. a᪨㥬 a. 室.
A⨢ ᪨ ஢ - "0".
ய a a 室  ﭨ "1"   ﭨ
"0" a ⮬ 室.   ⮬ ७  aa  CALL
#0066, ..  a稭a  ᯮ  ணa  a᪨-
㥬 a, aᯮ  aa #0066.  ⮬  ⥪-
騩 a ᯮ ᭮ ணa a    ⥪.  
㬥 a  室  a "MAGIC".

  INT
  INTERRUPT, a. 室.
A⨢ ᪨ ஢ -  "0".
Aa a ᫥ a a ᯮ塞 a.  
a㦥 "0" 믮 a  ᮮ⢥⢨   a-
 ० a(a  IM0,  IM1,  IM2).  a  a
a a   a஢aa a DI    a-
襭a a EI.

  BURQ
  BUSRQ, BUS REQUEST, a 設. 室.
A⨢ ᪨ ஢ "0".
 㯫  "0"  a   室  aa
⥪騩 a設 横 (  6-  a⮢)    ॢ  設
aa, 設 a   IORQ, MREQ, RD, WR  a⨢  -
ﭨ, aa 祬 譥 ன⢮, a襥   ᨣa,
      設a  யa        
aa  a  a a/뢮a a, 㫨 -
ய.

  BACK
  BUSAK, BUS REQUEST ACKNOWLEDGE, ⢥ত aa 設.  室.
A⨢ ᪨ ஢ - "0".
aa ன, a襬 BUSRQ,  設 ᢮  
  a.

  WAIT
  a. 室.
A⨢ ᪨ ஢ - "0".
a訢a  a a  a設  横    㦨    "a-
a" ⮣ 横a.  ᫨, aਬ, a  ᯥa  a
ॡ㥬  ய஬  a,  ᯥ  a    
a  ᨣa  "0",   㤥 a  室a  
ﭨ "1", a஧ ⥪騩 横.  a a 㤥 ⮢a
a a a,  ᯥ ᭨a ᨣa WAIT, aa  
,  a ⮢.

  M1
  MACHINE CYCLE 1,  롮a a a樨  a.  室.
A⨢ ᪨ ஢ - "0".
  롮થ a a樨 aaa  "0".
 ⥭ 䨪 a (#FD #??, #DD ??, #ED  ??,  #CB  ??)
aaa a (ਦ)  a  a,  ᮯ஢a  a
⥭  䨪a.  a  aaa    "0"        横
⢥ত a, ६  ᨣa IORQ.

  RFSH
  REFRESH CYCLE, 横 ॣa樨. 室.
A⨢ ᪨ ஢ "0".
a  㣨 奬a a,   ⥪饬 横  ந-
 ॣa a  ᫮ a 設 aa -  a -
a樨.

  HALT
  HALT STATE, ﭨ aa. 室.
A⨢ ᪨ ஢ "0".
 a "HALT" ய aaa "0" a ⮩  
 a ᨣa a,   뢥      ﭨ
aa  ᭨  ᨣa.

  RD
  READ, ⥭. 室.
A⨢ ᪨ ஢ - "0".
⨬ ᨣa ய a ,   
a  a (ᮢ⭮  MREQ) 
a     (ᮢ⭮  IORQ).

  WR
  WRITE, a. 室.
A⨢ ᪨ ஢ - "0".
⨬ ᨣa ய a ,  
  a (  MREQ)    
     (  IORQ).

  MREQ
  MEMORY REQUEST, a a. 室.
A⨢ ᪨ ஢ "0".
⨬ ᨣa  ᮮa,   aa  a.

  IORQ
  INPUT/OUTPUT REQUEST, a a/뢮a. 室.
A⨢ ᪨ ஢ - "0".
⨬ ᨣa  ᮮa,   a   aa
 a a/뢮a.  a   ᨣa  aaa(ᮢ-
⭮  M1)  横 ⢥ত a᪨㥬 a.

  IOGE; IORQGE, a IORQCE.
  INPUT-OUTPUT  GATE  ENABLE,  a襭  a    ७
a ZX-SPECTRUM.  室, a  譥 ன⢮  
aa a  "1",  祣  aa(a), a-
, १ 奬  "  ",  "  ",  a
a १ /  "⨬ ﭨ".  譥 ன⢮ 
a "1" a  ⮬  室,  ᫨    ,    
aa  .  a a aa 롮a  ७
⮢ ZX-SPECTRUM  a饭  , 祭 १ -
,  a  ६ 롮ન.

  CROM
  CHIP SELECT ROM, 롮a ७  a. 室.
A⨢ ᪨ ஢ - "0".
奬a a ⨬ ᨣa  ᮮa,      a
a  aa #0000...#3FFF,    ZX-SPECTRUM a室-
 .

  CRGE; CSROMGE, a CSROMCE.
  CHIP SELECT ROM GATE  ENABLE,  a襭  롮ન  ७
.室 " ".  a  a  aaa  ᨣa
IOGE.  a⨢ ᨣa CROM 譥 ன᢮  a
"1" a CRGE, a a aa aa  ७   
ன⢮  a  ᢮   a⢥  -
७.    ᯮ짮a   a      ᢮
ணa a⪨  "MAGIC".

  RAS
  ROW ADDRESS STROBE, -ᯥ ७ ᨣa. 室.
 ᯮ짮a   ஢a.   ᯮ짮a
a  ᨣa  a⮩ 3.5 .

  DOS; DCDOS, a EDOS  DOSEN.
  DOS ENABLE, 롮a . 室.
A⨢ ᪨ ஢  - "0".
aa,   a   a⢥   a 
 TR-DOS, a a   TR-DOS.   祭 -
਩ ன ஢ "0" a ⮬ 室   aa  
a⨢a, a a ன⢮        a
TR-DOS.


  DCGE
   ௨-ᯥ ᨣa.
aa,   a    祭 0- a .

  +5V
  a.
  祭  譨 ன   aᨬa쭮  ⮫ ஢.

  GND
  訩 ஢.
a    aᨬa쭮 ⮫묨 ஢a.
