#OE

Sega Saturn Internal Memory Mod with FRAM – no battery required

SegaSaturn's profile picture
Published in 
 · 28 Feb 2021
Sega Saturn Internal Memory Mod with FRAM – no battery required
... UPD43257B Pinout of FM1808 (my candidate replacement chip) The pinouts are almost perfect matches except for one pin. The UPD43257B has an active-high CE signal on pin 22 (driven by signal SCE2 on the schematic) whereas the FM1808 has an active-low #OE signal on pin 22. Tracing back the SCE2 on the Sega Saturn Schematics I found that it is originating from a battery management IC. This type of chip usually prevents bad writes during power down cycles. Clearly, this signal would not be necessary fo ...

7A69 Issue 12

eZine's profile picture
Published in 
 · 30 Dec 2020
... 4"&D*$M' M!U"WO"C+!P+&F8E,#$IC-20,=6X><W94ZR-O,<*16.5(U;$8KS;&"=8:%X35 M1@%RYD<!5G`OZC7A8C&`L:"T=:F979@4]2+EECV1EMT(S%OZM<"07ZYBO)2M M<)7Q(FO>HE[,7-5M>^1)#\#"=B$.N3V#(9>_&495P4;O11BFI4@AL^828'!) M<X;+N`^&+3O<\V,(&VL\7+303=#OE5)C@`3"RAMCXA`)'E;T<4(3.VON:1F( MGM$XW1RQDLA^X&S":YB?$M:3E7.:R4J",-@+Z#%6%DO#BCMLP`2N7R!Q>\2D M%W^0;\>Q&8]+$CML22#R.H`6!%#C=-A*DR^9VU!6FE6_R-BK>;#C3*(O)5,] MG9\6@&0R1<:T4]-O?77C<28N[_D\H,OT81FD\]'BP!DO>SEIRDB!MG?92Y?` M5<%IFF$C`P< ...

NewBies 2

eZine's profile picture
Published in 
 · 21 Aug 2019
... !`%!0,\!0Z#K_'\M;#E.`^1!S$(O8T^#3XO;9@,$0T^L+ MT\N`Z1"2,\#3XLL'#@8+R7T,]]/WT8/#`8/1`.LO`\-S!('"`!"*Z;$$TN4" M]8KHT^@#T(K%)0\`RP<.!@O)?0SWT_?1@\,!@]$`Z]$KPW,$@>H`$(KYL032 MYS+;*].*Z-/H`]"*Q24/`,M5B^Q6'KBD`H[8BW8$"_9\%8/^6'X#OE<`B3;> M`HJ$X`*8B_#K#??>@_XC?^G'!MX"__^XI`*.P":)-G\`N/__'UY=P@(`58OL M5AZXI`*.V(MV!%;HJ?^+QA]>7<("`%6+[!ZXI`*.V+@`1(M>!LTADB6``!]= MRU6+[(/L(E97'KBD`H[8!L1^"HM>"(/[)'=<@/L"<E>+1@Z+3A`+R7T2@'X& M`'0,)L8%+4?WV??8@]D`C7;> ...

Commodore Hacking Issue 20

eZine's profile picture
Published in 
 · 25 Apr 2019
... %NOEG4[=N[=NW/Q_OT3.,#SZHV+5FU7L%RO1G6Z M5&?/FRE9GCAKA?T?/)QH>F;CZM:O-V^N7/CMW:E9ER9]>?/DQ(T!!QJW 04. MP <GRO6F6[NVG;OW<.+'ES>?OIT[N*"UN+@M@]\W">0U=<Z7-F4T&X<UC"]R M\%A['*%R1VG29<N6+U7.3'&:7R"^RY0M2ZHL>?(DR9,C;#OE"KI=Z'?TP'3W MF"%D1C*M40/$O<+@6CE/(!49?8GMDE?.<8;/!5,3U%>^C/G29@Y"72C2I4^K M5LUZ=6O7L&'!ABU[=FU:M&C+FA4KIO'+EE73^&L"/^U:M&G+3'[:L66_ANWZ MU0MD@TG\L6._=KV:->K4I4F+%@T:U&=-FBP876<I'4_PEF!E?/M-;JD<'OSV MZM&-)_?]NW ...
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