
         ⪮ ᠭ General Instruments / AY-3-8910/12/13
         ---------------------------------------------------------

         thanks to: Gerton Lunter, Marat Fayzullin, Sergey Bulba, RDC,
         Victor Isaev, Stanislav Zainchkovsky, Rakoth, Tatsuyki Satoh,
         Nicola Salmoria, Hacker KAY, Fabrice Frances, Ville Hallik,
         Alexey Melnikoff, Michael Cuddy, Dimitry, General Instruments
         AY3-8910 Technical Reference Manual,Yamaha YM 2203 data sheet.

 :Yamaha YM-2149F (. ࠧ "⫨ AY3-8910  Yamaha YM2149F")

                   Vss (GROUND) 1 +-----------+ 40 Vcc + 5V
                            NC  2 |           | 39 TEST1
                   Analog CH.B  3 |           | 38 Analog CH.C
                   Analog CH.A  4 |           | 37 DA0
                            NC  5 |           | 36 DA1
                          IOB7  6 |           | 35 DA2
                          IOB6  7 |           | 34 DA3
                          IOB5  8 | AY-3-8910 | 33 DA4
                          IOB4  9 |           | 32 DA5
                          IOB3 10 |           | 31 DA6
                          IOB2 11 |           | 30 DA7
                          IOB1 12 |  40 LEAD  | 29 BC1
                          IOB0 13 |DUAL INLINE| 28 BC2
                          IOA7 14 |  PACKAGE  | 27 BDIR
                          IOA6 15 |           | 26 TEST2
                          IOA5 16 |   (DIP)   | 25 A8
                          IOA4 17 |           | 24 A9* (n/a on AY-3-8912)
                          IOA3 18 |           | 23 RESET*
                          IOA2 19 |           | 22 CLOCK
                          IOA1 20 +-----------+ 21 IOA0

奬 AY-3-8910 (   "몠 ", "-
 ᮯ", "몠 ", "㪮 ",  ⠪
"PSG"  "SSG")  40 ⠪⮢   8-⮢  /뢮 (A  B;
   ᯮ, ।祭  裡 稯 ᥬ⢠ AY  "譨
஬",  A  B ᮥ  - ਩ ன,
ਬ ⨪). -뢮     㥬 AY-
. 奬 AY-3-8912  28 ⠪    8-⮢ 
(⮫쪮  A); AY-3-8913 - 24 뢮,   . ⠫쭮 ( ᫥
ந 㪮) /  General Instruments  (  AY3-8910
= AY3-8912 = AY3-8913), 祣  ᪠    Yamaha (. "⫨
AY  YM"   ⮣ 䠩).  筮 -11 ⠭  Yamaha
2149F; ᮦ     墠⠥ ६ ஢   YM ࠡ
 /뢮 A  B ( ࠡ  ).


                           PSG registers
                          ~~~~~~~~~~~~~~~

r# name  used by   description                       L remark
=============================================================================
00 R0  Tone Gen.   Channel A Fine Tune Register      8  8  ਮ A
01 R1  Tone Gen.   Channel A Coarse Tune Register    4 . 4  ਮ A
02 R2  Tone Gen.   Channel B Fine Tune Register      8  8  ਮ B
03 R3  Tone Gen.   Channel B Coarse Tune Register    4 . 4  ਮ B
04 R4  Tone Gen.   Channel C Fine Tune Register      8  8  ਮ C
05 R5  Tone Gen.   Channel C Coarse Tune Register    4 . 4  ਮ C
06 R6  Noise Gen.  Noise Period Register             5 ਮ 㬠/㤠୨
07 R7  Mixer,I/O   Mixer Control,I/O Enable Register 8 +I/O (xxCBA CBA)
08 R10 Amp.Control Channel A Amplitude Ctrl Register 5 ஬  A
09 R11 Amp.Control Channel B Amplitude Ctrl Register 5 ஬  B
0A R12 Amp.Control Channel C Amplitude Ctrl Register 5 ஬  C
0B R13 Envelope Gn Envelope Fine Tune Register       8 .8  ਮ.env
0C R14 Envelope Gn Envelope Coarse Tune Register     8 .8  ਮ.env
0D R15 Envelope Gn Envelope Shape/Cycle Control Reg. 4 ଠ 饩 (env)
0E R16 I/O         I/O Port A Data Store             8  /뢮 A
0F R17 I/O         I/O Port B Data Store             8  /뢮 B
=============================================================================

(*) ਬ砭 #1: PSG = Programmable Sound Generator;
                   SSG = Square Sound Generator

(*) ਬ砭 #2:  ⨢ ᨣ RESET  ॣ AY ⠭
 0, __ ⮭      (00  ॣ 07)  ᨬ쭮
᮪ ⮩ (㫨  ॣ 00-06).  ⠪   ॣ ஬
⠪  㫨,   ᨣ RESET AY "".

 16 ॣ஢   1 ,   ॣ  ᯮ 
8    .  ᯮ짮 AY    뢠 ᯥ䨪
ᯮᮡ 祭  ࠡ  .ᮯ஬ । RDC:  
  (177714)    AY-ॣ (0-15),  --
.஬ ⮣,    177714  ... ⮡  
ॣ AY  뤠 :

MOV #377, @#177714 (376 - , 375 - ன   ).

  ᠬ ⭮  . .஬ ⮣, ᫥   
 奬 祭 AY   ࠡ⠥ ⠪ ࠧ,, ਬ,
  ॣ AY #0 뤠  MOV #177, @#177714; 㦭
⠭     AY  ந ⠪ .
᫥   AY   ⮫쪮 뢠   ᢮ ॣ
   ; ,_᪮쪮  ⭮_, 奬 祭 AY  
   ᤥ. /*** more info needed !! ***/

-----------------------------------------------------------------------------

ଠ ॣ஢ 00, 02, 04 ( 8   ᪮ ):

bit#  7 6 5 4 3 2 1 0
      L L L L L L L L

 7-0   8  ਮ   ᮮ⢥饬 
         (00 -  A, 02 -  B, 04 -  C). 孨 4  室
          ॣ 01, 03, 05 ᮮ⢥⢥ (  A, B, C)  -
          १騩 12-⮢ ਮ.    ᫮ ⥬ 
          㪠   -  ᫮ ᮮ⢥  
          ().ਮ 易  ॡ㥬 ⮩ 㫮 N=93750/F
          N - ᫮ ᨬ  ॣ 00/01, 02/03  04/05,F - 㦭
           , 93750 - ⠭ 砥  ⠪⮢
          AY (=1.5 MHZ)  16 (1500000/16).  㣨  稯
         AY  ⠪⮢ 㣮 ⮩, ਬ 1, 2, 3.5  5 Mhz,
         ᮮ⢥⢥ ⠭ 㤥 㦥 㣮.  ᫥ 
           ⮭ ⠪ ⮩ AY / 16. ,ᠭ 
         Yamaha MSX-2, ZX Spectrum,Amstrad ..  ந  ,⮫쪮
           㤥   㣮 ⮭쭮,  ᮪ 
          - "䠫訢"  筥 ( ⥮ਨ : ⠪ ᢮⢮
         ய᪮ 몠쭮 ஬᪮ 誠:   ⠪⮢
           㪠 ந室 ᬥ饭   /᮪
          㪮 ᯥ -  "ࠢ" ⪫  ""
           ᥩ .

-----------------------------------------------------------------------------

ଠ ॣ஢ 01, 03, 05 (孨 4  ਮ ᪮ ):

bit#  7 6 5 4 3 2 1 0
      x x x x H H H H

 3-0  孨 4 ਮ      묨  ॣ஢
         00, 02  04 ࠧ १騩 12 - ⮢ ਮ ᮮ.
         (HHHH LLLL LLLL). ஬ ⮣, ᫥     ਮ ⮭
         ࠢ  (0)  ⢨⥫쭮  ⠪ -   
         ਮ ࠢ 1,..訩  ਮ ࠢ 0000 0000 0001.
          ᯥਬ⮢  ॠ 稯 Yamaha 2149F  ᭨  ਮ
         0  1  ⠪ ᮪     ਭ-
           . 䠪 ࠦ  㫥 樨 AY ᯮ짮
            .  ᠬ (.. Period 0 = Period 1) ⭮
            㬠 / Noise Generator (. ᠭ ॣ 06)
               !!! ᫨ ਮ 饩 
         㫥    ࠢ   ⮩  
         뤠 稯  Envelope period = 1 (. ᠭ ॣ஢ 0B  0C).
            ࠩ  ᠭ  General Instruments AY-3-8910
         Technical Manual  ஬ ⮣  Yamaha YM2203 Data Sheet. 
           ᪨   ⠪⮢  稯
         AY = 1.5Mhz ࠢ ਡ⥫쭮 [22 hz..95 kHz]; ᫨  ⠪⮢
          AY 㤥 ࠢ 2.0 Mhz,    㤥 ࠢ
         [30 hz..125 kHz].  ⥮६ ⥫쭨-/Sampling theorem
          ࠢ쭮 ஢   ⠭ 室 ᨣ,
         襣  ᢮ ⠢ ᨬ  N ॡ ᯮ-
          SAMPLING RATE 訩 2*N,  १ 㤥  ᮮ⢥-
         ⢮  ( ୮  ந ᮪
         ମ).⥫쭮,⮡ ࠢ쭮 㫨஢ AY 祭
           ॡ  ந뢠 95 * 2 = 190 kHz (!)  筮
          ᮮ⢥  ᮢ६ 㪮   IBM PC.
         ᯮ㥬   㫥 প AY Sampling RATE  㬮-
         砭 ⠢  34 ,  筮  饣
         設⢠  (몠  AY । ᯮ 祭 ᮪
         ,   ⮬   ࠢ  ਭ 祫᪨
         宬). 饬, १ 樨 AY/YM _ਥ_,  筮 
         ।   YM  ᢮ 11     :)

 4-7 ,       㣮     
         ࠡ 稯.

ਬ砭: ⥫ ᭮ ⠪⮢   AY ࠡ⠥ ⠪ ࠧ,
              ࠢ쭮,  ந  
              祭 ⭮ - ᮪.

-----------------------------------------------------------------------------

ଠ ॣ 06 (ਮ 㬠)

bit#  7 6 5 4 3 2 1 0
      x x x N N N N N

 4-0  騩    ਮ 㬠   ⠪
         ࠧ  0  31 (筮).  __  ᫮ ⥬ __
         砥  室  㬠 (㤠୨). ਮ 易 
         ॡ㥬 ⮩ 㬠 㫮 N = 93750/F, N - ᫮ ᨬ
          ॣ 06,F-㦭   ,93750 - ⠭ 砥
          ⠪⮢  AY (   1.5MHZ)  16 (1500000/16).
         㣨   㣮 ⠪⮢ ⮩ AY ⠭ 㣠;
              㬠 ⠪ ⮩ AY/16.
          ਬ,  ⠪⮢  AY = 1.5 MHZ    
           ਡ⥫쭮 [3 kHz ... 94 kHz]. ᫨  ⠪⮢
          AY 㤥 ࠢ 2 Mhz,     㬠
         㤥  ࠩ [4 kHz ... 125 kHz]. ᫨ ਮ 㬠  ࠢ 0
            室 ⠪    ਮ ࠢ 1.

 5-7  奬.
-----------------------------------------------------------------------------

ଠ ॣ R7 (Mixer/IO port):

bit# 7 6 | 5 4 3 | 2 1 0
         | Noise | Melody
    Ib Ia| C B A | C B A
    

 7 롨ࠥ  -뢮 B (0 = , 1 = 뢮)
 6 롨ࠥ  -뢮 A (0 = , 1 = 뢮)

᫨  5 = 0 -   C 
᫨  4 = 0 -   B 
᫨  3 = 0 -   A 

᫨  2 = 0 -  C ࠥ 
᫨  1 = 0 -  B ࠥ 
᫨  0 = 0 -  A ࠥ 

 __-஢ 祭,  ⮨ 뢠     
ந஢ ᫮ ᨬ  ॣ 07.     
騬 ६.஬ 㬠 ᮮ⢥ ஬ ⮭ (ᬮ
ᠭ ॣ஢ 08, 09, 0A). ਮ 㬠 騩     
ॣ 06    । 0-31 (. ॣ. 06). ᫨  - 
      (  ॣ 7 ᪨஢ "1"), ᮮ-
騩  ॣ ஬  ࠢ ஢ 殮 
室 ( ⮬ 砥 ਮ () ⮭// 㬠  /** MORE
INFO NEEDED! **/). 砥 __ 4- 䬨᪨ Covox-/,
殮  室   䬨᪮ 誠  0 Volt  1 Volt
(塨⭮ ⮬,  AY  ᥣ 16 ஢ ஬, 0  15 -
.ᠭ ॣ஢ 08, 09, 0A ).  ࠧ  ந
஢  -   8- "" ( 16  筮 ⮦,
 ਬ  Scream Tracker ॡ ८ࠧ  4-⠬ (Downsampling).
-----------------------------------------------------------------------------

ଠ ॣ஢ 08, 09, 0A (஬ ):

bit#  7 6 5 4 3 2 1 0
      x x x E V V V V

 3-0 - ஬  (0-, 15-). ஬   -
           ᪮ 誠 .. 㬥襭 ᫠  2 뢠 㬥襭
           ஬  2 ࠧ. ᥭ   ॣ 몫砥 
           .

 4    - ⠭ Envelope ()  ᮮ⢥騩 , ᫨
             = 1.  ⠭ 饩 ࠢ ஬
           । AY.  ⮬ ஬   ६ ᮣ᭮
             ॣ 0D ଥ 饩,  ਮ/ 
             ॣ 0B  0C. 砫쭠 ஬  ⠭
           Envelope  0,  15  ᨬ   ATT (. 
           ᠭ ॣ 0D); ᮤন ॣ஢ ஬ 08 (09, 0A)
            ⠭  Envelope  AY.

 5-7   .
-----------------------------------------------------------------------------

ଠ ॣ 0B ( 8  ਮ ७ 饩)

bit#  7 6 5 4 3 2 1 0
      L L L L L L L L

           孨 ᥬ  ਮ 饩   ॣ 0C.
            饩 易   ਮ 㫮 N = 5859,375 / F,
            N - ᫮ (ਮ), ᨬ  ॣ 0B (訩 )  0C
           (訩 ),F-ॡ㥬   ,5859,375 - ⠭,
           祭  ⠪⮢  AY (   1.5 mHz)  256.
           ⠭ 5859,375 ⮫쪮    㣨 ஢, ⠪
           AY ⮩ 1.5 MHZ.
-----------------------------------------------------------------------------

ଠ ॣ 0C (孨 8  ਮ ७ 饩)

bit#  7 6 5 4 3 2 1 0
      H H H H H H H H

             ᨬ  ॣ 0B  0C ਮ,⥬  १-
             饩.᫨ ਮ 饩  = 0, AY 
             Yamaha  ᥡ  ࠧ. AY-3-8910   "訥
           " AY-3-8912 / AY-3-8913  ਮ = 0  
            ⠪  ⮩   ਮ ࠢ 1.  ࠧ  AY
            ਮ ࠢ 1.Yamaha YM2149F    0 ਮ
              ⮩ ࠢ  (1/2)  
           ன 뤠 稯  ENVELOPE PERIOD = 1. (. ⠪ "⫨ AY
            Yamaha"  ᠬ  ⮣ 䠩).ᨬ ਮ  
           稯 ( AY  Yamaha)   -  ࠢ 65535 decimal (  
           ᮮ⢥ 쭮  饩).  
            饩  ⠪⮢  AY  1.5 Mhz ਡ⥫쭮
           ࠢ [0.08 hz ... 5860 hz]. ᫨ AY ⠪ ⮩ 2 Mhz, 
             騥 = [0.12 hz ... 7812.5 hz]
-----------------------------------------------------------------------------

ଠ ॣ 0D (ଠ 饩)

bit#  7 6 5 4 3 2 1 0
      x x x x S S S S

 3-0  -   (shape)  ஬  . ᥣ 
 10   (  16, ⮫쪮 10 ⫨ ମ  
㣠).஬ ⮣,- 0-3 (.#1) ࠪ᪨ ᮢ  -ମ
9 (.#4),   4-7 (.#2)  ᮢ   15 (.#10). 
⫨        ⭮; AY-3-8910 by RAKOTH  訩
   ஢ AY / YM by Sergey Bulba  ࠧ砥  ).
 ࠧ 稯 AY-3-8910 ন  _8_  ࠧ
 ⮢. ਢ 㭪樨 ⮢ 0-4 ॣ 0D   
ਣ묨 ﬨ  General Instruments AY-3-8910 Technical Manual:

 3  CONT  (Continue)    ⠭  1  稪 Envelope 㤥
                          । ⮬ HOLD;᫨  CONT=0, 
                          饩 㤥 ⠭  0000 ᫥ 1 横 
                          ࠭  祭   쭥訥 横.

 2  ATT   (Attack)      ⠭  1 稪 Envelope  
                           0000  1111 (Attack);  ⠭  0 稪
                             1111  0000 (Decay).

 1  ALT   (Alternate)   ⠭  1 稪 envelope  ࠢ-
                             ⨢ ᫥  横.
                          ᫨   ALT  HOLD ⠭  稪
                          Envelope ਭ ᢮ 砫쭮 砭 ।
                          室  ﭨ HOLD.

 0  HOLD  (Hold)        ⠭  1 ࠭稢 Envelope ᥣ 
                          横,࠭ ᫥ 横  ( -
                          ﭨ 0000  1111 -   ⮣, 㢥稢
                           稪 Envelope  㬥蠫.

 4-7 .

 ᨬ  ᨣ CONT,ATT,ALT  HOLD   ਭ 
來 (ᥢ-᪨) ।⠢  ᫥饩 ⠡:

CONT ATT ALT HOLD   Envelope shape   #   value in AY r13/0D   remarks
----------------------------------------------------------------------------
 0   0    x   x     \
                      \___________   #1      0-3, 9           same as wave#4


 0   1    x   x      /|              #2      4-7, 15          same as wave#10
                   /  |___________

 1   0    0   0    \  |\  |\  |\     #3        8
                     \|  \|  \|  \

 1   0    0   1   \                  #4      9, 0-3           same as wave#1
                    \ _____________


 1   0    1   0    \    /\    /\     #5        10 (0A)
                     \/    \/    \/
                      ____________
 1   0    1   1   \  |               #6        11 (0B)
                    \|

 1   1    0   0     /|  /|  /|  /|   #7        12 (0C)
                  /  |/  |/  |/  |/
                      ____________
 1   1    0   1     /                #8        13 (0D)
                  /

 1   1    1   0      /\    /\    /\  #9        14 (0E)
                   /    \/    \/

 1   1    1   1      /|              #10     15 (0F), 4-7     same as wave#2
                   /  |___________

            ==> [ 1/f ] <== repetition period of envelope

 㤭 , ᫨  2 (ATT) = 0,  砫쭠 ஬ 饩
  뢠  㬠; ᫨  2 = 1,  砫쭠 ஬
  ⠥  ᨬ㬠 ( 类 砥  ࢮ ਮ
饩;  ⥬ ᮣ᭮  ଥ).

-----------------------------------------------------------------------------

 0E/0F . ᮯ ᯮ  ࠭ ᮤন ⮢
A  B.ࠢ ந室 १ ॣ  R7 (.).  ணࠬ
窨 ७  ⮣ ⮡

    A ᫥:
==============================

1.  AY-ॣ  (07);
2. ⠭  6      1  믮   ॣ.07;
3.  AY-ॣ  A (0E);
4. 믮    ॣ 0E.

    B ᫥:
==============================

1.  AY-ॣ  (07);
2. ⠭  7      1  믮   ॣ.07;
3.  AY-ॣ  B (0F);
4. 믮    ॣ 0F.

, ᥭ   A  B  ० 뢮 (OUTPUT) ⠭ ⠬ 
  ᫥ ᮡ⨩:

- 㧪 㣨    A  B (   ॣ AY-3-8910,
  ⢥騥   모   ᮤন ⮢ A  B, ⮫쪮
  ᫨  ४祭 ० -뢮 १ ॣ  (07),.);
- 몠 ᨣ RESET  ;
- ४祭 AY  ०  (INPUT) १ 饭  ॣ ;


⮡    A ᫥:
=======================================

1.  AY-ॣ  (07);
2. ⠭  6      0  믮   ॣ.07;
3.  AY-ॣ  A (0E);
4. ந    ஬ 室 AY  ᭮ ࠭⢥
   CPU (  -     177714).

⮡    B ᫥:
=======================================

1.  AY-ॣ  (07);
2. ⠭  7      0  믮   ॣ.07;
3.  AY-ॣ  B (0F);
4. ந ⥭   ஬ 室 AY  ᭮ ࠭⢥
   CPU (  -     177714).

   A  B ०  (INPUT) ᮮ⢥ ᨣ  室
⠪ AY (ਬ     ⨪).  ⮣ ⮡ 
 ॡ ந  ⥭,  뫮 ᠭ .


      ⫨ 奬 AY-3-8910(12)  Yamaha 2149F (c) Tatsuyki Satoh
      ==================================================================

1.  ⮭  㬠 ⠪ ⮩   AY  YM 
    16 (   1.5Mhz / 16 = 93750); 饩  AY3-8910/12/13
   砥 ⠪⮢    256 ( = 1.5 Mhz / 256 = 5859,375);
    奬 Yamaha 2149F  饩 ⠪ ⮩  ⮩
       ⮭  㬠 (master chip clock / 16),  
   ⠪⮢   ⠢ 93750   㬠  ⮭,   饩.

2. ७ 稪  Envelope (஬ 饩)  AY-3-8910
    16 ࠤ権 (3 db / Step); Yamaha 2149F - 32 ࠤ樨 (1.5db/Step).
    ନ Step   1   ஬ ᮣ᭮
    ଥ 饩.

     㣨 ᫮, AY  ᫥  Envelope   16:
   AY internal envelope counter = (AY master clock (1.5 MHZ on )/256 ) / 16

   Yamaha  ᢮   32:
   Yamaha internal envelope counter=(YM master clock (1.5 Mhz on )/16) / 32

   ஬ ⮣ ஬ 饩   Yamaha  2 ࠧ ॥. 
   १ ⫨  㪥  ⮫쪮  ⮬  Yamaha  
   "஢" ਢ  ஬  ⠭ Envelope  ,
    AY -  "", 뢨.  " " ⫨ .

3. 奬 YM-2149F  ᯥ樠 뢮 ("") - ᯥ稢
   ᮢ⨬  AY.  AY ⢥   ⠪ 뢮.

4. ᬮ    Internet ଠ  ⮬   㬠  AY
    YM ࠡ⠥ -ࠧ, ᫥ "⮤ 筮 몠" 뢠
     ࠡ ᮢ襭 : RNG (random number generator) 
   㬠  17-⮢ ॣ஬, ᤢ , 祬  ᠬ
      bit 0 XOR bit 2. 뤢 ᠬ  
   ᯮ  樨 ᥢ砩 "㬠" (㤠୨) . .
   뫠  㪮 室 (⢥ ᬨ஢  ᪨
   ). ᫥ 樠樨 稯 AY RNG := 0001 /* more info needed! */

5.   ਢ  饭 ⫨ AY  YM, 㡫-
       ஢ ୠ "io".


                        AY3-8910  YM2149F? ()
                       ================================

        ⢥ p뭮 몠 ᮯpp 饭 ⭮⥫쭮
襢 p樥 p -⮪. p pᯮp 40-뢮 p-
奬 AY3-8910(AY) p⢠ ,  ⠪  ﯮ᪨ 
YM2149F (YM) p Yamaha. p ᥩ p⨢ 筮  p-
奬,   ⥫ ⬥  ""  "魮" 砭 AY 
p  YM.  p㣮 p,  p 몠 pp,
p p YM,  ⥭ p䥪.
         p稭 p  砭 p  室 ᫥
pp⨪  室.  ⭮ 㧯pp( )
ᮤp p ᨬ   p䬨᪨ 㤭묨 pp⨪
  , , . p䬨᪨   易  ᮡﬨ
p 祫᪨ 宬 p 㪮.  "p㬥" pᬮp
p  4-pp來묨 , ⮬ 室 ᨣ  16 㯥
p   p  p㣠  稭 3.
㤭 pp⨪     㪠,    ᮯp-
⨢ p㧪 R.   砥 "騩" AY  
pp  p  宦  "",祬 YM.
᪨ , .. ⭮襭 ᨬ쭮 室 ᨣ 
쭮,  AY ⠢ pp 32,   YM - 38.
 pp⨪ AY p  襩 ⥫쭮,  筥
p ᫥砭 ᯠ 㪮. 稥 祭 ⭮ p
 樫p 䥪 㬥饣 㪠.  p 樫p
 ⮬ 砥  p騥 , pﭨ  p묨 
p묨  㤥 pﬨ p p p⪨ p. p祬  AY
 16 p⪮,  ᮢ  p묨 묨,
  YM- 32 p⪠, .. 㤭 䥪  YM pp
5-pp來 !
           "p쭠" pp⨪ AY   p 
 p⥫쭮 ᫥砭,   ᢮p ᫨⭮ .
 ᫥ p  ⠪ ꥪ⨢ 業 p ᠬ 몠
樨  "p㬠", p  ᠦ  騬
 p 㪠.  YM     "", p뢨.
 㬥⭠   몠묨 p:  AY pp ᯮ
 "" ( p室  㪠  p㣮),  YM- "⠪"
(p⪮, p뢨⮥ ᯮ 㪮). p   "魮" 砭
AY p ᫥ p㧮 pp⨪  室.
         p塞  p⨪ 奬 ᮯp⨢ p㧪 
室  ⠢ 3...6 , ⮬  p AY  p,
祬 p YM - 襩  室 ᨣ Umax. ᫨  p㧪
뫠  1,8...2 ,      p⨢,
 YM 砫  p, 祬 AY.
        ⫨稥  㡨 p䥪 易  p p
ᮯp⨢  室 AY  YM.  室 ﭨ  ᨣ
  p㧪     p 室 AY  㫥 p殮,
  YM - ﭭ p 3...3,2, p  ᯮ ᭨  
p 㬥襭 p㧪  p⪮ 몠.  室  
 p⪨ 몠  p㧪.  p⪮ 몠  YM
⨣ ⥫쭮 稭 12...15 .  室 AY  YM
 奬  "p p", ..  p쭮 p
易⥫쭮  좠  室  騬 p.
 ⢥ ⨬쭮 p襭  奬 1 p 室 
祭   p "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",  p
ᮯpp p  ⮫쪮   ,  p 
ᨣ, 㯠    p p,   AY  奬 1
⭮襭   ⠢  3(9,5),   YM-pp 20(26).
p   ᨣ    p   蠥
p䥪, p  ⠪ p p   㬬p ᨣ 
 .  p   奬 1   
pp R21=R22=510 . p ⮬ ᮮ⭮襭  ⠢  18,
p,  p 㬥襭 p 室 ᨣ.  奬  p㣨
 pp ᫥ p ᯥ ᮮ⭮襭 R17/R21 
R20/R22  2. 奬 1  묨  ⠭ p筮  ⨯
p塞 . p   - ⥯ p 砭 YM  AY
 p   㤭 pp⨪ 
 p     p pp  奬 2.
p묨 pp 室 ⠭ p, p p 
᫠  㤥 p孨 5-6 㯥 ࠪp⨪.

                                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  *
                                             
         VD1-VD3  522             O +5V            
         RP1-RP3 = 1K
          p  室 (out)   ᬥ訢  
         p 奬 1.


         ⮣ ᫥,  뤥  ᭮ ᯥ.
   -p, 奬 祭    p p室 堭
 p.   砥 ᫥ ᯥ p室 堭
 18...20   ⨯ pp.
   -p,  p⢠ p p  p   p
㤭 pp⨪ ,  ᫥⢨, p   砭 
   

                                                        ip 8/96
