	ணࠬ ஢ન ஫஢ DMA i8237 ᨨ 1.02


	ணࠬ ।祭  ஢ન ஫஢ DMA  ॣ஢
७ .    稭  ஡ 
㪮묨 ⠬  㣨 ன⢠, ᯮ騬 DMA  ० Bus
Master.

	       ,   
      .

	ணࠬ  ࠭ ᢮  ᫮,   
     ࠭  䠩.

	!  ᫥ ᪠  DOS  ⢨ ࠧ
Memory Manager',  ⠪   ᪠ - १ ⢨  
⫮   ।⥫ ⥭  ᪥  SCSI-᪠ 
।᪠뢠  ,     쬠 ! 筮, 
      Memory Manager'    OS/2, ,
஢   ஫,  ⢮ 㠫樨. 
⥫쭮 ᪠   ᪥  뢠 १ אַ 
᪥.   ।  ࠡ CPU, ⥬ ,
஫ 뢠  ⥬ ⠩. ࠭ ਭ  
   ( ࢮ 宫 १㧪) ᫥ ࠡ
ணࠬ,  ⠪   TTY-䥩  ⢨ ᨩ  Windows, OS/2,
Windows NT, Linux, BSD, QNX, Novell, etc. :)


				

	T8237 [-S<᮪ 㯯 ⮢/>] [-R<䠩>] [-B[६]]
	 <᮪ 㯯 ⮢/> - ᯨ᮪ 㯯 ⮢  ,
  ᫥ ᯮ/஢. ᮪ ।⠢ ᮡ 
㪢 A...C,  㯯 ⮢   0...7,  
 DMA (0...3 -  0...3 ࢮ ஫, 4...7 -  0...3
ண ஫). 饭 ⮢   ஫ 頥
஢ ஫. <䠩> -  䠩, 㤠 ᫥ 뢮
१ ⮢ ( ⮣,    ࠭). ᫨  -R  㪠,
뢮 ந室 ⮫쪮  ࠭.  -B 砥 "burn-in" (  :)
 ᫥ ᭮ ⮢. [६] - ६ ஢  ,
㪠   (1...65535), ᫨  㪠 -   
 20 , ᫥ 襭 ஢ ᫥  .
 ६ 뤥ন  筮 +/-1 ,  IMHO ⢥.
ਬ: T8237 -S4C -RMY8237.TXT -B45 -   㯯 ⮢ C, 
஢  4 ( 0 ண ஫), १   䠩
MY8237.TXT, ᫥ ᭮   burn-in   45   .
	 T8237 -? 뤠 (ᮢᥬ)  ᪠.


			쪮 砭

	 0 ண ஫ ᯮ  ⠭⭮ ⥪
AT  ᪠஢,   DRQ/DACK  뢥  ISA 設.  ⮩
稭 ⮢⥫ ࠧ 稯⮢   ॠ뢠 
,  ॠ뢠 ਢ (85C407, ਬ,  蠥  ᠬ
 饭  ⮬ ). ⮬ 0  ண ஫
  ஢ , ᪠   樥 -S4.


		᮪  ᮮ饭:

饭,  騥 訡 ஫ DMA:

Unable to create report file.
	 㤠 ᮧ 䠩, 㪠  ⢥ 㬥  -R

! Insufficient memory.
	IMHO ਨ 譨 :)

! RAM buffer unreliable.
	஢ઠ , ⮩    ,  訡.

* 88/86/286/386 CPU detected.
	।   ᫥ ஢.    
	㤥 ந  稭 ⢨ ⠪.

* 486+ CPU detected.
	।  486  .      
	㤥 믮, ᫨  室  ॠ쭮 ०.

* CPU is in PM - cache invalidation tests are impossible.
	 室  饭 ० -   
	,    . ⥫쭮 모 
	     .

* n DMA controller(s) installed.
	㦥 n (1  2) ஫஢ DMA.

! No operable DMA controller - further test aborted.
	 㦥 ஫஢ DMA  ।騥   
	 ਣ -  ஢ ᫥.


饭  訡  ஫ DMA. 㯯 A - ᭮ :

A1	# Reset failed.
	 襫  (Master Clear). 訡 ⠫쭠.

A2	# Hi/Lo flip-flop error.
	㦥 訡 ਣ 訩/訩 . 訡 ⠫쭠.

A3	- DRQ polarity setting error.
	 ࠡ⠥  ୮ DRQ

A4	# Ch n address register/word count error.
	㦥 訡 ॣ஢ /⥪饣   /
	⥪饣 稪 ᫮   n. 訡 ⠫쭠.

A5	# Ch n address extension register error.
	㦥 訡  ॣ ७    n. 訡
	⠫쭠, ᫨    0 2 ஫.

A6	- Extra address extension register error.
	㦥 訡  ॣ஢ ७ . 訡
	 ⠫쭠.


饭  訡  ஫ DMA. 㯯 B -    
(᫥ ⬥,  稭 訡  ࢮ ஫  AT ⥪
   ࠡᯮᮡ 0  ண ஫):


*** ਬ砭:       .


B1.1	# Unable to finish writing.
	 ᬮ  (  ४饭  ⠩-)   
	  Block Mode.

B1.2	# Write error.
	訡      Block Mode -  訫, 
	  뫨 ॠ쭮 ᠭ.

B2	# Read error.
	 ᬮ   ⥭  .

B3	# Verify error.
	 ᬮ   ᥢ 뫪.

B4	- Decreasing address error.
	 ࠡ⠥ 㬥襭 ᮢ.

B5	- Demand mode error.
	 襫  Demand Mode.	

B6	- Single mode error.
	 襫  Single Mode.

B7	# Autoinitialization error.
	 襫  ⮨樠樨.


饭  訡  ஫ DMA. 㯯 C - ७  
(᫥ ⬥,  稭 訡  ࢮ ஫  AT ⥪
   ࠡᯮᮡ 0  ண ஫):


	* DMA Clock is nn.nn MHz.
	७ ⠪⮢  ஫ 諮 ଠ쭮, 뤠
	⠪⮢   MHz. --  , ᪮쪮 筮 ...

C1	- DMA timing failed.
	訡  ७ ⠪⮢  ஫.

C2	- Extended write error.
	 襫  ७ . --  , ࠡ⠥  

C3	- Compressed timing error.
	 襫  ᦠ⮩ ।. --  , ࠡ⠥  

C4	- Controller disabling error.
	 襫  饭 ஫. --  , ࠡ⠥  

C5	- No DMA overrun.
	 㦥 ⠭⭠ "", 뢠 DMA overrun.  
	   뢠 ... --  , ࠡ⠥  


	   ?

祭  -   (Lesha Bogdanow)   2:5095/9@fidonet. 
ࠤ ᥬ ᠬ, 砭,   ।.


	Product history:

0.01	- First pre-release.
0.02	-   A4, C4, C5.
1.00    -  Burn-in .  ५.
1.01	- ࠢ  訡  뢮 १⮢. ࠭ 
	  Temporary register,   騩  ᫠. 
	  ᪠  -?
1.02	- ࠢ 쥧 , ਢ訩  堫 ⮢ B1,
	  B4...B7, C2...C5

	To do list

-    稥 প Mem-to-Mem ?
-    ࠢ쭮  


	Test results:

Winbond 82C37 -   室.
஥ ஫ SiS 85C407 -   4 , 訡 B6.
஥ HM82C206 - 訡 B6.
஥  - Winbond'᪮ 稯 - B6  B8  4 .
Opti895 -  Ok.
Intel Premier - B5,B6,C3     B1.1,B2,B3,B4  4 .
UMC 491 -  Ok.
Expert 4045 - 訡 B6,C3     B1.1,B2,B3,B4,B5  4.

	  饥:

 ᤥ  i8042  i8237
⮬ 㤥 MC146818 (㦥  ᠭ)
⮬, ୮, i8253/54
⮬, ୮, i8259
 ,   -  .


