Intellec 4/40 signals
From "Intel Intellec 4/40 Mod 40 Microcomputer
Development System - Reference Manual" Oct 1975
Chapter 3 imm6-28 4040 RAM Memory Module
page 41-2 P1 pin list for 4K X 8 RAM board

and INtellec 8/80 signals from  
Intel INtellec 8/80 schematic diagram for
*RAM slot signals only* of  
the backplane of the Intellec 8/80.

8/80		bus Intellec 4/40

(/T2)		1 
/DB OUT	2 
GND		3 GROUND
GND		4 GROUND
		5 
		6 
		7 
		8 
		9  
		10 
same		11 MEMORY ADDRESS 0  from Control Module
same		12 MEMORY ADDRESS 1  from Control Module
same		13 MEMORY ADDRESS 2  from Control Module
same		14 MEMORY ADDRESS 3  from Control Module
same		15 MEMORY ADDRESS 4  from Control Module
same		16 MEMORY ADDRESS 5  from Control Module
same		17 MEMORY ADDRESS 6  from Control Module
same		18 MEMORY ADDRESS 7  from Control Module
same		19 MEMORY ADDRESS 8  from Control Module
(MM0)		20 MEMORY ADDRESS 9  from Control Module
/WAIT REQ	21 n/c
/DBIN		22 n/c
same		23 DATA OUT 0        [CPU /MEMORY DATA 0]
same		24 DATA IN 0         from Control Module
same		25 DATA OUT 1        [CPU /MEMORY DATA 1]
same		26 DATA IN 1         from Control Module
same		27 DATA OUT 3        [CPU /MEMORY DATA 3]
same		28 DATA IN 3         from Control Module
same		29 DATA OUT 2        [CPU /MEMORY DATA 2]
same		30 DATA IN 2         from Control Module
same		31 DATA OUT 5        [CPU /MEMORY DATA 5]
same		32 DATA IN 5         from Control Module
same		33 DATA OUT 4        [CPU /MEMORY DATA 4]
same		34 DATA IN 4         from Control Module
same		35 DATA OUT 7        [CPU /MEMORY DATA 7]
same		36 DATA IN 7         from Control Module
same		37 DATA OUT 6        [CPU /MEMORY DATA 6]
same		38 DATA IN 6         from Control Module
same		39 not connected
/T40		40 n/c
same		41 n/c
same		42 n/c
-9V		43 n/c
-9V		44 n/c
/T43		45 n/c
/HOLD ACK	46 n/c
-12V		47 n/c
-12V		48 n/c
+12V		49 n/c
+12V		50 n/c
/HOLD REQ	51 n/c
/RST 8080	52 n/c
/BUS BUSY	53 n/c
/IO OUT		54 n/c
OSC		55 n/c
/HLT IREQ	56 n/c
jumpers		57 /ADDRESS 12 from Control Module
jumpers		58 MOD SELECT 12 from Control Module
same		59 ADDRESS 13 
same		60 ADDRESS 12 
jumpers		61 MOD SELECT 13 from Control Module
jumpers 	62 /ADDRESS 13 from Control Module
jumper		63 /ADDRESS 14 from Control Module
jumpers 	64 MOD SELECT 14 from Control Module
same		65 ADDRESS 15 
same		66 ADDRESS 14 
jumpers		67 MOD SELECT 15 from Control Module
jumpers		68 /ADDRESS 15 from Control Module
II0		69 n/c
IN0		70 n/c
n/c		71 n/c
IN1		72 n/c
n/c		73 n/c
n/c		74 n/c
/INT CYCLE	75 n/c
IN3		76 n/c
II2		77 n/c
IN2		78 n/c
IN5		79 n/c
II4		80 n/c
IN6		81 n/c
/IOIN		82 n/c
(local)		83 n/c
IN4		84 n/c
n/c		85 n/c
IN7		86 n/c
n/c		87 n/c
n/c		88 n/c
phi2		89 n/c 
same		90 /BYTE2 from Control Module
same		91 /ADDR STROBE from Control Module
same		92 /BYTE1 from Control Module
same		93 MOD ENABLE from Control Module
same		94 ADDRESS 11 [CPU CHIP SELECT 3]
same		95 /WRITE-READ [CPU W] from Control Module
same		96 ADDRESS 10 [CPU CHIP SELECT 2] 
PMODENBL	97 [CPU /PHI2 CLOCK]
same		98 [CPU /PHI1 CLOCK]
same		99 +5 VDC 
same		100 +5 VDC