________________________________________

           AY versus Yamaha
________________________________________

                    (C) Viper/Techno Lab
                       (C)  ⥭

    ,  ᫮    ⠪
让 奬  몠 -
.     pC-譨 
    ࠢ 樨
⮣ 稯.   ஡    
ᯮ짮 ॠ ZX.   
 ࠡ  ⮩ 1.75...MHz. 
㣠 ஡ -   ᮯ஢.
 ᯮ짮 室 ᫥騥  -
:
        AY 3-8910  General Instruments
        AY 3-8910  (, )
        AY 3-8912
        YM-2149F   Yamaha

   ࠧ ᮯ AY? ᫨ 
 奬  㪢 GI,  
AY   General Instruments, ᫨ 
 -   "ࠪ".
   ॠ쭮 Spectrum 128 ᯮ짮
AY-8910  General Instruments. ⥬
 த  ᮪饭  
AY-8912. ⢮ 砭    -
.  뭮   YM-2149F.
 -  易  ᪮ -
  Yamaha ᮯ஢  
MSX  ᮡ⢥  ந⢠.   
⮬,    YM -     AY
    砭, ⠪      
㭪    ॣࠬ (
⮬  ᭮  ⮮।    
Action).
  筮   ࠧ  㪥 ⨫  -
  祭  ᮯ  ᢮
 ( 94 ).     ⮬,
   ᢮ ᮯ   ᢮  㣮
 Schneider ⥬ MSX-1  (
   - ᭮  ⮦    Z80A,  
 梥⮢    -
᢮ 梥, ஬ ⮣ ᪨ ᮯ).
  AY  General Instruments. -
  訫 ⠢ AY   ( MSX)
 㯨 㣮 ᮯ - Yamaha.
     ࠢ,  㬠, 
  ࠪ   襫 -
   㣮 (⮦ Yamaha). ,
    ᮯ    㦥
।饣...    饬 YM 諮 १
       AY. 
筮  - AY    .  
   ( ⮬ ᫥  -
),    몠   筥.
 饩  ᮡ ࠧ:
YM  ०   .   ᮢᥬ -
 - YM   AY.
     ᥩ  2 稯 AY  YM.
ﭭ ⮨ AY.    -
 YM.  䥪⮢ 㤠- 祧-
,  ࠫ ᮢᥬ  -㣮-
...
  -    ਧ㬠 -   
  AY,  ⥫ 蠥  
YM  ,     ᮢᥬ  
,   ⥫.
  ਬ, 몠  3-, 5-  7-
஢    ᠫ   AY.  ⮬
 -  Yamah'.   ࠧ -
  ࠧ  :  -
  ABC  (A-left, B-centre,C-right),  
㣨 ACB (A-left,C-centre,B-right).
    ᥣ  몠 ᠫ 
奬  ABC (  ⠪ 奬,   -
 ᠭ  ABC).
    ⥬  㦤   Fido- ZX.
SPECTRUM.      뢮  
। 襬 :

----------------------------cut---------

--- ifmail v. 2. 14. os-p2
*Origin: -=(I.SPECTRUM)=- (2:4623/55.68)

FIDO Echos (2:5063/47.11) 
                          ZX.SPECTRUM 

Msg  :  2886  of  3160
From : Oleg Bashtenko       2:4623/55.68
                       27 ﭢ 99 02:34
To   : All            28 ﭢ 99 23:35
Subj : AY vs YM ... 


  Hello All!


         AY 3-8910  YM2149F ?

  ⢥ 뭮 몠 ᮯ-
஢  饭  ⭮⥫쭮  襢
த樥   ࠭  -⮪.  ப
ᯮ࠭   40-뢮   奬
AY 3-8910 (AY) ந⢠  ,  
⠪   ﯮ᪨   YM2149F (YM)
  Yamaha.    ᥩ ⨢
筮  奬,   -
⥫  ⬥   ""  "-
"  砭  AY   ࠢ  YM. 
㣮  ஭,   몠
ணࠬ,  ந  १  YM,
 ⥭ ८䥪.
    稭 ࠧ  砭 -
  室 ᫥ ࠪ-
⨪  室.  ⭮
㧯 ( ) ᮤন  -
ᨬ    䬨᪨ -
㤭묨  ࠪ⨪    ,
,  .  䬨᪨   
易  ᮡﬨ   祫-
᪨   宬   ஬   㪮.  
"㬥"   ।ᬮ७   ࠡ   
4-ࠧ來묨  , ⮬ 室 ᨣ-
   16 㯥  ஬  -
      㣠  稭 3.
㤭 ࠪ⨪   
  㪠,     ᮯ⨢-
 㧪 R.   砥 "-
騩"  AY    ।-
   ࠧ  宦 
"",  祬 YM.  ᪨ -
, .. ⭮襭  ᨬ쭮 -
室  ᨣ  쭮,   AY
⠢  ਬ୮  32,     YM -
38.  ࠪ⨪ AY ਢ-
    襩  ⥫쭮,   筥
஬ ᫥砭 ᯠ -
.  稥  祭 ⭮  -
  樫ࠬ 䥪 㬥-
  㪠.    ࠭  樫 
⮬  砥    騥 ,
ﭨ  묨  ࠧ-
묨  㤥 ஢ﬨ १  ࠢ
஬⪨ ६.  祬  AY  -
 16 ஬⪮,    ᮢ  
ࠢ묨  묨,   YM - 32 -
⪠, .. 㤭 䥪  YM
ନ 5-ࠧ來 !
     "ࠢ쭠" ࠪ⨪
AY   ਭ   -
⥫쭮 ᫥砭,    ᢮-
ࠧ ᫨⭮ .  ᫥
஫   ⠪ ꥪ⨢ 業 
ᠬ  몠  樨  "-
㬠",      ᠦ 
騬   ஬ 㪠.  YM
    "",  뢨.
  㬥⭠     몠묨
ନ:   AY ࠪ୮ ᯮ
 "" ( 室 
㪠  㣮),    YM -  "⠪"
(⪮, 뢨⮥ ᯮ 㪮).
   "魮" 砭 AY -
 ᫥ 㧮 ࠪ-
⨪   室.
    ਬ塞  ࠪ⨪ 奬 ᮯ-
⨢  㧪   室
  ⠢ 3...6 ,  ⮬ -
 १ AY  ஬, 祬 १ YM
- 襩  室 ᨣ-
 Umax.  ᫨  㧪  뫠  
1, 8... 2 ,    
 ⨢,  YM 砫  ஬-
, 祬 AY.
  ⫨稥  㡨 ८䥪 易-
    ࠧ  ७ ᮯ⨢
  室  AY  YM.  室
ﭨ  ᨣ   㧪  
    室 AY  㫥-
 殮,   YM - ﭭ -
  3...3,2,      ᯮ
᭨    㬥襭 -
    ⪮ 몠.  
室    ⪨ 몠 
㧪.  ⪮ 몠  YM
⨣ ⥫쭮 稭  12...15
.    室 AY  YM 
奬  " ஬", .. 
ଠ쭮   ࠡ   易⥫쭮  
좠    室    騬
஢.    ⢥ ⨬쭮 -
襭    奬 1  ࠦ  室
  祭    "ATM-
TURBO-2".

                奬 1

  DD57A AY3-8910(YM2149F)

 Ŀ 4      Ŀ       Ŀ
    A Ĵ R17 *Ĵ R21 Ĵ
                    
                        
                        
              Ŀ   
          Ĵ R18 *> LEFT
       3     
    B *
             Ŀ
          Ĵ R19 *> RIGHT
                 
                        
                        
       38     Ŀ      Ŀ
    C Ĵ R20 *Ĵ R22 Ĵ
                

 R17, R20 = 1K
 R18, R19, R21, R22 = 2,2K

  ᫨     믮 ᨪ-
  PLAY "V15A",   ன ᮯ-
  ந  ⮫쪮  -
  ,     ᨣ,
㯠    ࠢ ८-
,    AY  奬 1 ⭮襭  
 ⠢  3 (9,5),  
YM - ਬ୮  20 (26).  ६
 ᨣ    ࠢ  -
  蠥 ८䥪, -
  ⠪ મ ࠦ -  㬬-
஢ ᨣ    .  
ࠧ   奬 1  -
  १஢  R21=R22=510
.  ⮬ ᮮ⭮襭  -
    18,  ࠢ,    
㬥襭  ஢  室  ᨣ.
 奬  㣨  १஢
᫥ ६ ᯥ  ᮮ⭮-
 R17/R21  R20/R22  2. 奬 1 
묨  ⠭  -
  ⨯ ਬ塞 .   
  -  ⥯ ਡ 砭
YM    AY    ४ 
 㤭 ࠪ⨪ -
         
஥ १஢  奬 2. -
஥묨 १ࠬ 室  -
 ஢,  ஬  ᫠-
  㤥 孨 5-6 㯥
⠪⨪.

  奬 2.

  DD1 YM2149F out
            >
Ŀ 4        \
   A *Ĵ Ĵ
                /       Ŀ
                VD1   Ĵ RP1 Ŀ
                            
              out                  
          >                     
      3        \                
   B *Ĵ Ĵ      
                /      Ŀ   
                VD2   *Ĵ RP2 *
                            
              out                  
          >                     
      38       \                
   C *Ĵ Ĵ      
           /      Ŀ   
                  VD3   *Ĵ RP3 *
                              
                        O +5V        

  VD1-VD3 522
  RP1-RP3 = 1K
     室 (out)  
ᬥ訢   ࠢ 奬 1.


    ⮣ ᫥,  -
  ᭮ ᯥ:
  -,  奬 祭  
 ࠧ 室 堭  
८.     砥 ᫥
ᯥ  室  堭  
18... 20   ⨯ ஢.
  -,     ந⢠   ࠧ
࠭     ࠧ -
  ࠪ⨪  ,   ᫥⢨,
ࠧ    砭    
.


                        i 8/96

                           Oleg AKA 0lav


