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Hardware - Info about Megarom Mapper chip needed

Author

Info about Megarom Mapper chip needed

Pentarou
msx novice
Posts: 21
Posted: October 07 2006, 22:35   
Hello,
I'm searching for info about the mapper chip used in a cartridge, it's the ASCII M60002-0125 manufactured by Mitsubishi, I need to interface a 4Mb Flash to it, but the ROM already on the cartridge is just a 1 Mb one, so I need to know where are located the other address lines.
I could probably manage to find it myself by peeking some of the mapper address registers, but It's been years since I used a real MSX so I'm trying to speed things up.
Please don't assume I'm just lazy, I tryed searching this and other forums, I googled (even on JPN pages) and I found nothing useful

So please help me!


Guillian
msx professional
Posts: 618
Posted: October 07 2006, 23:35   
This info is from Kazuhiro Tsujikawa's docs.
Bn signals are the ones you need to address the whole 4Mb flash (and more if you need it)


       M60002
  アスキータイプ2(ASC2)	42ピンシュリンクパッケージ
    +-------__-------+
   1|B7	           VDD|42	Bn   (O):拡張メモリアドレス
   2|B6              NC|41		(MA13-MA20になる:8kBモード)
   3|B5	            /OE|40		(MA14-MA21になる:16kBモード)
   4|B4	       /SLTSL|39
   5|B3	        /WAIT|38	/OE  (O):全てのバンクへの
   6|B2	            /M1|37			Output Enable
   7|B1	            /RD|36	/OEn (O):指定バンクへの
   8|B0	           /WR|35			Output Enable
   9|/OE0      /RESET|34	(/OE類は/SLTSL,/RDがアクティブで
  10|/OE1	     S2|33	  ない時にはアクティブにはならない)
  11|/OE2	     S1|32
  12|/OE3	     S0|31	Sn   (I):/OEnの範囲設定(後述)
  13|D7	           /PRE|30
  14|D6	          /WTE|29	SEL  (I):Lで16kBモード,Hで8kBモードになる
  15|D0	            SEL|28
  16|D5	            A15|27	/WTE (I):Lでメモリーリードサイクルに1ウェイト入れる
  17|D1	            A11|26		 Hでウェイトを付加しなくなる
  18|D4	            A12|25
  19|D2	            A13|24	/PRE (I):Lで/OEnを予測?詳細は不明
  20|D3	            A14|23		 通常はHで使用する
  21|GND	  CLOCK|22
    +----------------+


Pentarou
msx novice
Posts: 21
Posted: October 08 2006, 17:44   
Thanks!!!
Do you have a link for the complete Tsujikawa's docs?

Guillian
msx professional
Posts: 618
Posted: October 08 2006, 19:11   
Pentarou
msx novice
Posts: 21
Posted: October 08 2006, 19:50   
Thanks!!!!!!!!!!!
 
 







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