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WILLEM PC3b 16bit adapter schematic needed'
http://forums.nesdev.com/viewtopic.php?f=9&t=18047
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Author:  GalacticScum [ Sat Nov 17, 2018 4:16 am ]
Post subject:  WILLEM PC3b 16bit adapter schematic needed'

I've obtained some 27c160,does anybody have an 16bit adapter schematic, or can anybody tell me how to wire it UP exacly? I need to write 27c160 only. Some Time ago i've borrowed an 16bit adapter without any buffers and it worked well, errors at verification were occasionally. I'm asking cause i cant find it nowhere in the web, too much garbage sites.

Author:  GalacticScum [ Sat Nov 17, 2018 4:40 am ]
Post subject:  Re: WILLEM PC3b 16bit adapter schematic needed'

OK, i found sth...

pin1 (Willem) -> not connected
pin2 (Willem) -> pin34 (29F800/27C800) (A15)
pin3 -> pin35 (A14)
pin4 -> pin38 (A11)
pin5 -> pin4 (A6)
pin6 -> pin5 (A5)
pin7 -> pin6 (A4)
pin8 -> pin7 (A3)
pin9 -> pin8 (A2)
pin10 -> pin9 (A1)
pin11 -> pin10 (A0)
pin12 -> pin30 (Q15A-1)
pin13 -> pin14 (DQ0)
pin14 -> pin16 (DQ1)
pin15 -> pin18 (DQ2)
pin16 -> piny 11,12,31,32 (/CE+Vss+BYTE)
pin17 -> pin20 (DQ3)
pin18 -> pin23 (DQ4)
pin19 -> pin25 (DQ5)
pin20 -> pin27 (DQ6)
pin21 -> pin29 (DQ7)
pin22 -> pin42 (/WE)
pin23 -> pin40 (A9)
pin24 -> pin13 (/OE)
pin25 -> pin39 (A10)
pin26 -> pin41 (A8 )
pin27 -> pin3 (A7)
pin28 -> pin37 (A12)
pin29 -> pin36 (A13)
pin30 -> pin33 (A16)
pin31 -> pin2 (A17)
pin32 -> pin22 (Vcc)
A19 -> pin1 (A18)

Thats the 27c800 version, do i need to modify sth else except connecting the A19 to Willem pcb?

Author:  Fisher [ Sat Nov 17, 2018 5:37 am ]
Post subject:  Re: WILLEM PC3b 16bit adapter schematic needed'

I've found an adapter's schematics here.
Hope it helps.

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