From "Intel Intellec 4/40 Mod 40 Microcomputer Development System - Reference Manual" Oct 1975 Chapter 2 imm?-?? 4040 Memory Control Module page 54 P1 pin list 1 2 /TEST to CPU not used in 4/40??? 3 GROUND 4 GROUND 5 MEMORY ADDRESS 0 from CPU module 6 MEMORY ADDRESS 1 from CPU module 7 MEMORY ADDRESS 2 from CPU module 8 MEMORY ADDRESS 3 from CPU module 9 MEMORY ADDRESS 4 from CPU module 10 MEMORY ADDRESS 5 from CPU module 11 /MEMORY ADDRESS 0 to PROM/RAM Modules 12 /MEMORY ADDRESS 1 to PROM/RAM Modules 13 /MEMORY ADDRESS 2 to PROM/RAM Modules 14 /MEMORY ADDRESS 3 to PROM/RAM Modules 15 /MEMORY ADDRESS 4 to PROM/RAM Modules 16 /MEMORY ADDRESS 5 to PROM/RAM Modules 17 /MEMORY ADDRESS 6 to PROM/RAM Modules 18 /MEMORY ADDRESS 7 to PROM/RAM Modules 19 /MEMORY ADDRESS 8 to PROM/RAM Modules 20 /MEMORY ADDRESS 9 to PROM/RAM Modules 21 MEMORY ADDRESS 6 from CPU module 22 MEMORY ADDRESS 7 from CPU module 23 /MEMORY DATA 0 to PROM/RAM Modules & console 24 /WRITE DATA 0 to RAM module 25 /MEMORY DATA 1 to PROM/RAM Modules & console 26 /WRITE DATA 1 to RAM module 27 /MEMORY DATA 3 PROM/RAM Modules 28 /WRITE DATA 3 to RAM module 29 /MEMORY DATA 2 PROM/RAM Modules 30 /WRITE DATA 2 to RAM module 31 /MEMORY DATA 5 PROM/RAM Modules 32 /WRITE DATA 5 to RAM module 33 /MEMORY DATA 4 PROM/RAM Modules 34 /WRITE DATA 4 to RAM module 35 /MEMORY DATA 7 PROM/RAM Modules 36 /WRITE DATA 7 to RAM module 37 /MEMORY DATA 6 PROM/RAM Modules 38 /WRITE DATA 6 to RAM module 39 /CHIP SELECT 0 to CPU module 40 /CHIP SELECT 1 to CPU module 41 /OUT to CPU module 42 /ENABLE MON PROM to CPU module 43 -10 VDC Power Supply 44 - 10 VDC 45 /CPU RESET to CPU module 46 /USER RESET to Rear Panel Output Connector 47 /CM—RAM2 to CPU module 48 /CM—RAM3 to CPU module 49 /CM—RAM0 to CPU module 50 /CM—RAM1 to CPU module 51 I/O 1 to CPU module 52 I/0 0 to CPU module 53 I/O 2 to CPU module 54 /IN to CPU module 55 F/not-L to CPU module 56 I/O 3 to CPU module 57 58 MOD SELECT 12 to RAM module 59 60 61 MOD SELECT 13 to RAM module 62 63 MOD SELECT 14 to RAM module 64 65 66 67 MOD SELECT 15 to RAM module 68 69 70 71 72 /DATA 3 to CPU module 73 STOP ACK to CPU for 4/MOD 40 74 STOP 75 76 77 78 79 /SYNC to CPU Modules 80 /DATA 1 to CPU Modules 81 82 /PROM SELECT to CPU Module 83 /DATA 0 to CPU Modules 84 /CM-ROM to CPU module 85 CHIP SELECT 3 to CPU module 86 CHIP SELECT 2 to CPU module 87 PM to CPU module 88 /4002 RESET to CPU module 89 90 /BYTE2 to RAM module 91 /ADDR STROBE to RAM module 92 /BYTE1 to RAM module 93 MOD ENABLE to RAM module 94 /MEMORY ADDR 11 to RAM module 95 /WRITE to RAM module 96 /MEMORY ADDR 10 to RAM module 97 /PHI2 CLOCK to CPU Modules 98 /PHI1 CLOCK to CPU Modules 99 +5 VDC 100 +5 VDC note: J43 TTY wired for 20mA operation All signal inputs outputs are at TTL levels except as noted.