Tengen RAMBO-1 pinout

Tengen 337006 or RAMBO-1: 40-pin 0.6" PDIP (Canonically mapper 64)

                  .--\/--.
        (n) M2 -> |01  40| -- +5V
   (r) PRG A16 <- |02  39| -> PRG A17 (r)
   (r) PRG A15 <- |03  38| <- CPU A13 (n)
   (r) PRG A13 <- |04  37| -> PRG A14 (r)
   (r) PRG /CE <- |05  36| <- CPU A14 (n)
   (rn) CPU D6 -> |06  35| <- CPU D7 (rn)
   (rn) CPU A0 -> |07  34| <- CPU D5 (rn)
   (rn) CPU D4 -> |08  33| <- CPU D0 (rn)
   (rn) CPU D2 -> |09  32| <- CPU D1 (rn)
       (n) R/W -> |10  31| <- CPU D3 (rn)
   (n) /ROMSEL -> |11  30| -> /IRQ (n)
   (r) CHR A10 <- |12  29| -> CIRAM A10 (n)
   (n) PPU A10 -> |13  28| -> CHR A11 (r)
   (n) PPU A12 -> |14  27| <- PPU A11 (n)
 (n) CIC toPak -> |15  26| -> CHR A13 (r)
  (n) CIC toMB <- |16  25| -> CHR A12 (r)
  (n) CIC /RST -> |17  24| -> CHR A14 (r)
   (n) CIC CLK -> |18  23| -> CHR A15 (r)
           GND ?? |19  22| -> CHR A17 (r)
           GND -- |20  21| -> CHR A16 (r)
                  '------'

Variant pinout for iNES Mapper 158:

   (n) /ROMSEL -> |11  30| -> /IRQ (n)
   (r) CHR A10 <- |12  29| -> n/c
   (n) PPU A10 -> |13  28| -> CHR A11 (r)
   (n) PPU A12 -> |14  27| <- PPU A11 (n)
 (n) CIC toPak -> |15  26| -> CHR A13 (r)
  (n) CIC toMB <- |16  25| -> CHR A12 (r)
  (n) CIC /RST -> |17  24| -> CHR A14 (r)
   (n) CIC CLK -> |18  23| -> CHR A15 (r)
           GND ?? |19  22| -> CIRAM A10 (n)
           GND -- |20  21| -> CHR A16 (r)
                  '------'

On the PCB 800032, there are seven jumpers:

• R1 connects PRG ROM pin 22(28 pin IC)/24(32 pin IC) to ground, for use with ROMs that follow the standard EPROM pinout.
• R2 connects the same pin to RAMBO-1 PRG A16, for use with 32-pin Nintendo mask ROMs and 28-pin 128 KiB JEDEC mask ROMs.

Only one of R1 and R2 should be populated.

• R3 connects CHR ROM pin 22(28 pin IC)/24(32 pin IC) to PPU /RD, for use with ROMs that follow the standard EPROM pinout.
• R4 connects the same pin to RAMBO-1 CHR A16, for use with 32-pin Nintendo mask ROMs and 28-pin 128 KiB JEDEC mask ROMs.
• R5 (unlabeled, under the 74'32 socket) connects CHR ROM pin 20(28 pin IC)/22(32 pin IC) to PPU A13, for use with ROMs that follow the standard EPROM pinout.
• Populating the 74'32 in the upper right corner of the board connects CHR ROM pin 20(28 pin IC)/22(32 pin IC) to PPU /RD OR PPU A13, for use with 32-pin Nintendo mask ROMs and 28-pin 128 KiB JEDEC mask ROMs.

Both R3 and R5 should be populated, or both R4 and the 74'32 should be populated.

• R6 and R7 disable the RAMBO-1's internal CIC.

Additionally, there are two cut & solder jumpers:

• P28 (on the underside of the board) controls whether PRG pin 28(28 pin IC)/30(32 pin IC) is connected to +5V or to RAMBO-1 PRG A17.
• C28 controls whether CHR pin 28(28 pin IC)/30(32 pin IC) is connected to +5V or to RAMBO-1 CHR A17.

Source:

• Kevtris [1] [2]
• FrankWDoom's Hard Drivin' reproduction