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Created page with '[[ACID]] Reverse Engineering == Schematic == Desoldered [[ASIC]] chip from Fano's cartridge (thanks, Fano), attached to PC's parallel printer port: ACID PC CLK --…'
[[ACID]] Reverse Engineering
== Schematic ==
Desoldered [[ASIC]] chip from Fano's cartridge (thanks, Fano), attached to PC's parallel printer port:
ACID PC
CLK ---- Strobe
CCLR ---- Init
SIN ---- Busy
/OE ---- Select
A0..A7 ---- Data 0..7
GND,5V ---- GND,5V
== Pictures ==
<gallery caption="Original circuit">
Image:AcidTestOldTop.jpg|Top
Image:AcidTestOldBottom.jpg|Bottom
Image:AcidTestOldWorkplace.jpg|Anonymous clean desk
</gallery>
This is original circuit, assembled while I was visiting my parents. I couldn't find a 36pin centronics socket, only a (very) old 25pin RS232 cable, so I needed to use that.
----
<gallery caption="Newer circuit">
Image:AcidTestOldTop.jpg|Top
Image:AcidTestOldBottom.jpg|Bottom
Image:AcidTestOldWorkplace.jpg|Nocash Headquarters
</gallery>
When I came back home, I wrecked the original circuit, and made a miniaturized adapter with robust centronics socket. Not that I'd still really needed it, I've been already done with the rev engineering at that time - I just didn't like messy cables.
== Schematic ==
Desoldered [[ASIC]] chip from Fano's cartridge (thanks, Fano), attached to PC's parallel printer port:
ACID PC
CLK ---- Strobe
CCLR ---- Init
SIN ---- Busy
/OE ---- Select
A0..A7 ---- Data 0..7
GND,5V ---- GND,5V
== Pictures ==
<gallery caption="Original circuit">
Image:AcidTestOldTop.jpg|Top
Image:AcidTestOldBottom.jpg|Bottom
Image:AcidTestOldWorkplace.jpg|Anonymous clean desk
</gallery>
This is original circuit, assembled while I was visiting my parents. I couldn't find a 36pin centronics socket, only a (very) old 25pin RS232 cable, so I needed to use that.
----
<gallery caption="Newer circuit">
Image:AcidTestOldTop.jpg|Top
Image:AcidTestOldBottom.jpg|Bottom
Image:AcidTestOldWorkplace.jpg|Nocash Headquarters
</gallery>
When I came back home, I wrecked the original circuit, and made a miniaturized adapter with robust centronics socket. Not that I'd still really needed it, I've been already done with the rev engineering at that time - I just didn't like messy cables.
