CPU电路图（TTL门电路做的CPU）Magic1

Magic-1 Homebrew CPU Magic-1 design & construction: Bill Buzbee Enclosure and front panel: Alistair Roe Design & debugging help, inspiration and encouragement: Ken Sumrall Dave Conroy Andrew Holme Ben Franchuk Gil Smith Mark Atherton Ron Watkins TTL Mark Al Kossow Simir Ribic TriPheonix Dave Brooks Barry Cross Ian White Attila Szabó John Doran Hans Summers Dennis Kuschel Merlin Skinner ...and many others Thanks! CPU: Custom design Construction: Wire-wrapped TTL Clock speed: 3 Mhz Memory: 4 MB Architecture: modified 1 address Address bus: 22 bits + I/O space Addressing modes: Reg-Reg Base + offset Push, Pop Registers: General: A, B Bases: SP, DP Control: MSW, PTB Special: PC, C Hardware page table Data bus: 8 bits ALU width: 16 bits Modes: supervisor & user External interrupt lines: 6 IDE hard drive interface Serial ports: 2 Real time clock Full front panel Serial 1 Serial 0 Compact Flash Reset LEDs http://www.homebrewcpu.org Clock Source SW1 SW2 Alternate Closed Closed 3 Mhz Open Closed Variable Closed Open Single Step Open Open Outside dimensions: 8.5 x 11 Inside dimensions: 6 x 8.75 Inside cutout centered: 1.125 side margins 1.250 top & bottom margins 0.75 corners Polish inside and outside edges All holes 3/16 (use template to drill) Rectangle: 5 3/8 x 8 1/2 Rounded corners 3” circular cutout Circle center 2.25” from top 2.25” from left side Polish outside edges 3/16 inner holes 1/8 outer holes Use template for drill holes Immediate MDR SSP SP DP C B A MAR TPC PC MSW/Flags ALU PTB Magic-1 Homebrew Computer Bill Buzbee Half Moon Bay, CA ROM SRAM (4 Meg x 8) Data Bus (8 bits) Address Bus (22 bits) Control High 5 Low 11 Fault Logic Low 4 High 11 Page Table 16-bit entries IR DEVICES Two-state connection Three-state connection Fault R L Z Immediate MDR SSP SP DP C B A MAR TPC PC MSW/Flags ALU PTB Magic-1 Homebrew Computer Bill Buzbee Half Moon Bay, CA ROM SRAM (4 Meg x 8) Data Bus (8 bits) Address Bus (22 bits) Control High 5 Low 11 Fault Logic Low 4 High 11 Page Table 16-bit entries IR DEVICES Two-state connection Three-state connection L Z Control Card Memory Card Device Card Register/ALU Card Fault R 1 2 3 4 5 6 7 8 A B C D E F G H IR[1..3] L_FAULT MEMREF CODE_PTB USER_PTB _STOP_CLK DBUS[0..7] A[0..21] MAR[0..15] L[0..15] _WR XL_MDR_LO XL_MDR_HI _WAIT Left Backplane (c) 2003, Bill Buzbee, Half Moon Bay, CA 1 A012 A023 A034 A045 A056 A067 A078 A089 A0910 A1011 A1112 A1213 A13 16 A1617 A1718 A1819 A1920 A2021 A2122 A2223 A2324 A2425 A2526 A26 29 A2930 A3031 A3132 A32 33 B 01 34 B 02 35 B 03 36 B 04 37 B 05 38 B 06 39 B 07 40 B 08 41 B 09 42 B 10 43 B 11 44 B 12 45 B 13 46 B 14 47 B 15 48 B 16 49 B 17 50 B 18 51 B 19 52 B 20 53 B 21 54 B 22 55 B 23 56 B 24 57 B 25 58 B 26 59 B 27 60 B 28 61 B 29 62 B 30 63 B 31 64 B 32 65C01 66C02 67C03 68C04 69C05 70C06 71C07 72C08 73C09 74C10 75C11 76C12 77C13 78C14 79C15 80C16 81C17 82C18 83C19 84C20 85C21 86C22 87C23 88C24 89C25 90C26 91C27 92C28 93C29 94C30 95C31 96C32 14 A1415 A15 27 A2728 A28 J1 ec96pra +5 Gnd 1 2 3 4 5 6 7 8 A B C D E F G H ALUOP[0..1] IMMVAL[0..1] USE_CARRY ALUOP_SZ L_PTB CLKS _ER_MDR _ER_IMM _HALT CLKM XINIT_INST L_PC _EL_MAR _EL_C _EL_PC _EL_DP _EL_SP _EL_A _EL_B _EL_MDR _EL_SSP _EL_TPC _EL_MSW L_EI L_MODE L_PAGING L_MAR L_MDR_LO L_MDR_HI L_MSW L_C L_DP _L_PTE L_SSP L_FPL _SET_FLAGS _FP_WRITE _E_PTE MEMORY _RW FP_L[0..3] _DMA_ACK _IRQ5 _IRQ4 _IRQ3 _IRQ2 _IRQ1 _IRQ0 _E_MDR_HI _E_MDR_LO _RESET _DO_RSHIFT COMMIT _NW _NP MSWZ MSWC MSWS MSWM MSWV MSWE MSWP L_SP L_B_HI L_B_LO L_A_HI L_A_LO _DMA_REQ IOCLK xCODE_PTB Right Backplane (c) 2003, Bill Buzbee, Half Moon Bay, CA 1 A012 A023 A034 A045 A056 A067 A078 A089 A0910 A1011 A1112 A1213 A13 16 A1617 A1718 A1819 A1920 A2021 A2122 A2223 A2324 A2425 A2526 A26 29 A2930 A3031 A3132 A32 33 B01 34 B02 35 B03 36 B04 37 B05 38 B06 39 B07 40 B08 41 B09 42 B10 43 B11 44 B12 45 B13 46 B14 47 B15 48 B16 49 B17 50 B18 51 B19 52 B20 53 B21 54 B22 55 B23 56 B24 57 B25 58 B26 59 B27 60 B28 61 B29 62 B30 63 B31 64 B32 65C01 66C02 67C03 68C04 69C05 70C06 71C07 72C08 73C09 74C10 75C11 76C12 77C13 78C14 79C15 80C16 81C17 82C18 83C19 84C20 85C21 86C22 87C23 88C24 89C25 90C26 91C27 92C28 93C29 94C30 95C31 96C32 14 A1415 A15 27 A2728 A28 J1 ec96pra Gnd +5 1 2 3 4 5 6 7 8 A B C D E F G H L[0..15] R[0..15] Z[0..15] ALUOP_SZ ALUV ALUC ALUS ALUZ MSWC USE_CARRY ALUOP[0..1] IR[0..7] _DO_RSHIFT 3 A 0 1 A 1 19 A 2 17 A 3 4 B 0 2 B 1 18 B 2 16 B 3 15 C N 5 S 0 6 S 1 7 S 2 8 F0 9 F1 11 F2 12 F3 13 G 14 P U174F381 3 A 0 1 A 1 19 A 2 17 A 3 4 B 0 2 B 1 18 B 2 16 B 3 15 C N 5 S 0 6 S 1 7 S 2 8 F0 9 F1 11 F2 12 F3 13 G 14 P U274F381 3 A 0 1 A 1 19 A 2 17 A 3 4 B 0 2 B 1 18 B 2 16 B 3 15 C N 5 S 0 6 S 1 7 S 2 8 F0 9 F1 11 F2 12 F3 13 G 14 P U374F381 3 A 0 1 A 1 19 A 2 17 A 3 4 B 0 2 B 1 18 B 2 16 B 3 15 C N 5 S 0 6 S 1 7 S 2 8 F0 9 F1 11 F2 12 F3 13 O V R 14 C N +4 U474F382 3 A 0 1 A 1 19 A 2 17 A 3 4 B 0 2 B 1 18 B 2 16 B 3 15 C N 5 S 0 6 S 1 7 S 2 8 F0 9 F1 11 F2 12 F3 13 O V R 14 C N +4 U574F382 13 C N 4 P 0 3 G 0 2 P 1 1 G 1 15 P 2 14 G 2 6 P 3 5 G 3 12 C N +X 11 C N +Y 9 C N +Z 7 P 10 G U6 74F182 2 1A 1 4 1A 2 6 1A 3 8 1A 4 11 2A 1 13 2A 2 15 2A 3 17 2A 4 1 1G 19 2G 18 1Y 1 16 1Y 2 14 1Y 3 12 1Y 4 9 2Y 1 7 2Y 2 5 2Y 3 3 2Y 4 U774F244 2 1A 1 4 1A 2 6 1A 3 8 1A 4 11 2A 1 13 2A 2 15 2A 3 17 2A 4 1 1G 19 2G 18 1Y 1 16 1Y 2 14 1Y 3 12 1Y 4 9 2Y 1 7 2Y 2 5 2Y 3 3 2Y 4 U874F244 2 1A 1 4 1A 2 6 1A 3 8 1A 4 11 2A 1 13 2A 2 15 2A 3 17 2A 4 1 1G 19 2G 18 1Y 1 16 1Y 2 14 1Y 3 12 1Y 4 9 2Y 1 7 2Y 2 5 2Y 3 3 2Y 4 U974F244 2 1A 1 4 1A 2 6 1A 3 8 1A 4 11 2A 1 13 2A 2 15 2A 3 17 2A 4 1 1G 19 2G 18 1Y 1 16 1Y 2 14 1Y 3 12 1Y 4 9 2Y 1 7 2Y 2 5 2Y 3 3 2Y 4 U1074F244 2 1A 1 4 1A 2 6 1A 3 8 1A 4 11 2A 1 13 2A 2 15 2A 3 17 2A 4 1 1G 19 2G 18 1Y 1 16 1Y 2 14 1Y 3 12 1Y 4 9 2Y 1 7 2Y 2 5 2Y 3 3 2Y 4 U1174F244 12 U12A 7404 Gnd 1 2 3 U13A 7400 1 2 3 U14A 7432 2 3 1 U15A 7402 3 4 U12B7404 2 1A3 1B5 2A6 2B11 3A10 3B14 4A13 4B 1 S15 G 41Y 72Y 93Y 124Y U16 74157 Gnd ALU 61C0 51C1 41C2 31C3 102C0 112C1 122C2 132C3 14A 2B 11G 152G 7 1Y 9 2Y U17 74153 61C0 51C1 41C2 31C3 102C0 112C1 122C2 132C3 14A 2B 11G 152G 7 1Y 9 2Y U18 74153 Gnd +5 1 2 3 U19A 7408 5 6 4 U15B 7402 4 5 6 U14B 7432 1 2 4 5 6 U20A 7420 9 10 12 13 8 U20B 7420 8 9 10 U15C 7402 11 12 13 U15D 7402 2 3 1 U21A 7402 5 6 4U21B 7402 8 9 10 U21C 7402 11 12 13 U21D 7402 2 3 1 U22A 7402 5 6 4 U22B 7402 (c) 2003, Bill Buzbee, Half Moon Bay, CA 1 2 3 4 5 6 7 8 A B C D E F G H ALUV ALUS ALUC ALUZ Z[0..15] L[0..15] MSWP MSWE MSWM MSWV MSWS MSWC MSWZ _EL_MSW L_MSW L_MODE L_PAGING L_FAULT MEMREF _RESET xCODE_PTB L_EI _SET_FLAGS MSW 2 D 3 C K 5 Q 6 Q 4PR1 CL U23A7474 1 2 D 1 1 C K 9 Q 8 Q 10PR13 CL U23B7474 2 D 3 C K 5 Q 6 Q 4PR1 CL U24A7474 1 2 D 1 1 C K 9 Q 8 Q 10PR13 CL U24B7474 2 1 A 1 4 1 A 2 6 1 A 3 8 1 A 4 1 1 2 A 1 1 3 2 A 2 1 5 2 A 3 1 7 2 A 4 1 1 G 1 9 2 G 18 1Y1 16 1Y2 14 1Y3 12 1Y4 9 2Y1 7 2Y2 5 2Y3 3 2Y4 U2574F244 3 1 D 4 2 D 7 3 D 8 4 D 1 3 5 D 1 4 6 D 1 7 7 D 1 8 8 D 1 1 C K 1 C L 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U2674273 2 1 A 3 1 B 5 2 A 6 2 B 1 1 3 A 1 0 3 B 1 4 4 A 1 3 4 B 1 S 1 5 G 4 1Y 7 2Y 9 3Y 12 4Y U2774157 2 1 A 1 4 1 A 2 6 1 A 3 8 1 A 4 1 1 2 A 1 1 3 2 A 2 1 5 2 A 3 1 7 2 A 4 1 1 G 1 9 2 G 18 1Y1 16 1Y2 14 1Y3 12 1Y4 9 2Y1 7 2Y2 5 2Y3 3 2Y4 U2874F244 Gnd 4 5 6 U19B 7408 +5 P D E M 5 6 U12C7404 Gnd (c) 2003, Bill Buzbee, Half Moon Bay, CA 1 2 3 4 5 6 7 8 A B C D E F G H L_A_LO _EL_A L_A_HI L_B_LO _EL_B L_B_HI L_C _EL_C Z[0..15] L[0..15] L_DP _EL_DP L_SP _EL_SP L_SSP _EL_SSP L_PC _EL_PC COMMIT _EL_TPC Z0 Z1 Z2 Z3 Z4 Z5 Z6 Z7 Z8 Z9 Z10 Z11 Z12 Z13 Z14 Z15 L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12 L13 L14 L15 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D 1 O C 11 C K 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U29 74F374 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D 1 O C 11 C K 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U30 74F374 Z0 Z1 Z2 Z3 Z4 Z5 Z6 Z7 Z8 Z9 Z10 Z11 Z12 Z13 Z14 Z15 L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12 L13 L14 L15 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D 1 O C 11 C K 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U31 74F374 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D 1 O C 11 C K 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U32 74F374 Z0 Z1 Z2 Z3 Z4 Z5 Z6 Z7 Z8 Z9 Z10 Z11 Z12 Z13 Z14 Z15 L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12 L13 L14 L15 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D 1 O C 11 C K 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U33 74F374 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D 1 O C 11 C K 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U34 74F374 Z0 Z1 Z2 Z3 Z4 Z5 Z6 Z7 Z8 Z9 Z10 Z11 Z12 Z13 Z14 Z15 L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12 L13 L14 L15 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D 1 O C 11 C K 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U35 74F374 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D 1 O C 11 C K 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U36 74F374 Z0 Z1 Z2 Z3 Z4 Z5 Z6 Z7 Z8 Z9 Z10 Z11 Z12 Z13 Z14 Z15 L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12 L13 L14 L15 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D 1 O C 11 C K 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U37 74F374 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D 1 O C 11 C K 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U38 74F374 Z0 Z1 Z2 Z3 Z4 Z5 Z6 Z7 Z8 Z9 Z10 Z11 Z12 Z13 Z14 Z15 L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12 L13 L14 L15 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D 1 O C 11 C K 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U39 74F374 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D 1 O C 11 C K 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U40 74F374 Z0 Z1 Z2 Z3 Z4 Z5 Z6 Z7 Z8 Z9 Z10 Z11 Z12 Z13 Z14 Z15 L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12 L13 L14 L15 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D 1 O C 11 C K 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U41 74F374 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D 1 O C 11 C K 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U42 74F374 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D 1 O C 11 C K 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U43 74F374 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D 1 O C 11 C K 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U44 74F374 General Registers (c) 2003, Bill Buzbee, Half Moon Bay, CA L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12 L13 L14 L15 1 2 3 4 5 6 7 8 A B C D E F G H R[0..15] _ER_IMM IMMVAL[0..1]IMMVAL[0..1] Z[0..15] L[0..15] L_MAR _EL_MAR MAR[0..15] _RESET 2 1A 1 4 1A 2 6 1A 3 8 1A 4 11 2A 1 13 2A 2 15 2A 3 17 2A 4 1 1G 19 2G 18 1Y 1 16 1Y 2 14 1Y 3 12 1Y 4 9 2Y 1 7 2Y 2 5 2Y 3 3 2Y 4 U4574F244 2 1A 1 4 1A 2 6 1A 3 8 1A 4 11 2A 1 13 2A 2 15 2A 3 17 2A 4 1 1G 19 2G 18 1Y 1 16 1Y 2 14 1Y 3 12 1Y 4 9 2Y 1 7 2Y 2 5 2Y 3 3 2Y 4 U4674F244 Z0 Z1 Z2 Z3 Z4 Z5 Z6 Z7 Z8 Z9 Z10 Z11 Z12 Z13 Z14 Z15 L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12 L13 L14 L15 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D 11 C K 1 C L 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U4774273 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D 11 C K 1 C L 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U4874273 2 1A 1 4 1A 2 6 1A 3 8 1A 4 11 2A 1 13 2A 2 15 2A 3 17 2A 4 1 1G 19 2G 18 1Y 1 16 1Y 2 14 1Y 3 12 1Y 4 9 2Y 1 7 2Y 2 5 2Y 3 3 2Y 4 U4974F244 2 1A 1 4 1A 2 6 1A 3 8 1A 4 11 2A 1 13 2A 2 15 2A 3 17 2A 4 1 1G 19 2G 18 1Y 1 16 1Y 2 14 1Y 3 12 1Y 4 9 2Y 1 7 2Y 2 5 2Y 3 3 2Y 4 U5074F244 Special Registers (c) 2003, Bill Buzbee, Half Moon Bay, CA 1 2 3 4 5 6 7 8 A B C D E F G H COMMIT Z[0..15] D[0..7] XL_MDR_HI XL_MDR_LO _E_MDR_HI _E_MDR_LO _EL_MDR _ER_MDR R[0..15] L[0..15] DBUS _RW _DMA_ACK L_MDR_HI L_MDR_LO 2 1A 3 1B 5 2A 6 2B 11 3A 10 3B 14 4A 13 4B 1 S 15 G 4 1Y 7 2Y 9 3Y 12 4Y U5174157 2 1A 3 1B 5 2A 6 2B 11 3A 10 3B 14 4A 13 4B 1 S 15 G 4 1Y 7 2Y 9 3Y 12 4Y U5274157 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D 11 C K 1 C L 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U5374273 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D 11 C K 1 C L 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U5474273 2 1A 1 4 1A 2 6 1A 3 8 1A 4 11 2A 1 13 2A 2 15 2A 3 17 2A 4 1 1G 19 2G 18 1Y 1 16 1Y 2 14 1Y 3 12 1Y 4 9 2Y 1 7 2Y 2 5 2Y 3 3 2Y 4 U5574F244 2 1A 1 4 1A 2 6 1A 3 8 1A 4 11 2A 1 13 2A 2 15 2A 3 17 2A 4 1 1G 19 2G 18 1Y 1 16 1Y 2 14 1Y 3 12 1Y 4 9 2Y 1 7 2Y 2 5 2Y 3 3 2Y 4 U5674F244 2 1A 1 4 1A 2 6 1A 3 8 1A 4 11 2A 1 13 2A 2 15 2A 3 17 2A 4 1 1G 19 2G 18 1Y 1 16 1Y 2 14 1Y 3 12 1Y 4 9 2Y 1 7 2Y 2 5 2Y 3 3 2Y 4 U5774F244 2 1A 1 4 1A 2 6 1A 3 8 1A 4 11 2A 1 13 2A 2 15 2A 3 17 2A 4 1 1G 19 2G 18 1Y 1 16 1Y 2 14 1Y 3 12 1Y 4 9 2Y 1 7 2Y 2 5 2Y 3 3 2Y 4 U5874F244 2 1A 1 4 1A 2 6 1A 3 8 1A 4 11 2A 1 13 2A 2 15 2A 3 17 2A 4 1 1G 19 2G 18 1Y 1 16 1Y 2 14 1Y 3 12 1Y 4 9 2Y 1 7 2Y 2 5 2Y 3 3 2Y 4 U5974F244 2 1A 1 4 1A 2 6 1A 3 8 1A 4 11 2A 1 13 2A 2 15 2A 3 17 2A 4 1 1G 19 2G 18 1Y 1 16 1Y 2 14 1Y 3 12 1Y 4 9 2Y 1 7 2Y 2 5 2Y 3 3 2Y 4 U6074F244 2A1 3A2 4A3 5A4 6A5 7A6 8A7 9A8 19G 1DIR 18 B117 B216 B315 B414 B513 B612 B711 B8 U61 74F245 98 U12D 7404 MDR 11 10 U12E7404 (c) 2003, Bill Buzbee, Half Moon Bay, CA 6 1C 0 5 1C 1 4 1C 2 3 1C 3 10 2C 0 11 2C 1 12 2C 2 13 2C 3 14 A 2 B 1 1G 15 2G 7 1Y 9 2Y U62 74153 6 1C 0 5 1C 1 4 1C 2 3 1C 3 10 2C 0 11 2C 1 12 2C 2 13 2C 3 14 A 2 B 1 1G 15 2G 7 1Y 9 2Y U63 74153 6 1C 0 5 1C 1 4 1C 2 3 1C 3 10 2C 0 11 2C 1 12 2C 2 13 2C 3 14 A 2 B 1 1G 15 2G 7 1Y 9 2Y U64 74153 6 1C 0 5 1C 1 4 1C 2 3 1C 3 10 2C 0 11 2C 1 12 2C 2 13 2C 3 14 A 2 B 1 1G 15 2G 7 1Y 9 2Y U65 74153 Gnd RegisterCard.bom Page 1 Register card BOM Item Qty References Value ------------------------------------------------------------------------------ 1 1 U13 7400 2 3 U15,U21,U22 7402 3 1 U12 7404 4 1 U19 7408 5 1 U20 7420 6 1 U14 7432 7 2 U23,U24 7474 8 6 U17,U18,U62,U63,U64,U65 74153 9 4 U16,U27,U51,U52 74157 10 5 U26,U47,U48,U53,U54 74273 11 1 U6 74F182 12 17 U7,U8,U9,U10,U11,U25,U28,U45,U46,U49,U50,U55,U56, 74F244 U57,U58,U59,U60 13 1 U61 74F245 14 16 U29,U30,U31,U32,U33,U34,U35,U36,U37,U38,U39,U40,U41, 74F374 U42,U43,U44 15 3 U1,U2,U3 74F381 16 2 U4,U5 74F382 1 2 3 4 5 6 7 8 A B C D E F G H CLKM FAULT_PENDING MSWZ MSWV MSWC MSWS IR[0-7] ENCODER[0..3] LATCH[0..3] XL_MDR_LO XL_MDR_HI _E_MDR_LO _E_MDR_HI PRIV XL_MODE XL_PAGING MISC[0..3] EL[0..3] ER[0..1] RIMMVAL[0..1] ALUOP[0..1] USE_CARRY LATCH_SZ RUSER_PTB CODE_PTB ALUOP_SZ DBUS[0..7] INIT_INST NEXT[0..7] _DO_BRANCH _FP_WRITE R_RW _RESET _NEXT0 XL_MAR _DMA_ACK FAULT_PENDINGMicrocode 1 A 0 2 A 1 3 A 2 4 A 3 5 A 4 16 A 5 17 A 6 18 A 7 19 A 8 15 C E 6 O 1 7 O 2 8 O 3 9 O 4 11 O 5 12 O 6 13 O 7 14 O 8 U1 74S472 1 A 0 2 A 1 3 A 2 4 A 3 5 A 4 16 A 5 17 A 6 18 A 7 19 A 8 15 C E 6 O 1 7 O 2 8 O 3 9 O 4 11 O 5 12 O 6 13 O 7 14 O 8 U2 74S472 1 A 0 2 A 1 3 A 2 4 A 3 5 A 4 16 A 5 17 A 6 18 A 7 19 A 8 15 C E 6 O 1 7 O 2 8 O 3 9 O 4 11 O 5 12 O 6 13 O 7 14 O 8 U3 74S472 1 A 0 2 A 1 3 A 2 4 A 3 5 A 4 16 A 5 17 A 6 18 A 7 19 A 8 15 C E 6 O 1 7 O 2 8 O 3 9 O 4 11 O 5 12 O 6 13 O 7 14 O 8 U4 74S472 1 A 0 2 A 1 3 A 2 4 A 3 5 A 4 16 A 5 17 A 6 18 A 7 19 A 8 15 C E 6 O 1 7 O 2 8 O 3 9 O 4 11 O 5 12 O 6 13 O 7 14 O 8 U5 74S472 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D 11 C K 1 C L 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U6 74273 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D 11 C K 1 C L 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U7 74273 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D 11 C K 1 C L 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U8 74273 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D 11 C K 1 C L 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U9 74273 3 1D 4 2D 7 3D 8 4D 13 5D 14 6D 17 7D 18 8D 11 C K 1 C L 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U10 74273 Gnd 4 D 0 3 D 1 2 D 2 1 D 3 15 D 4 14 D 5 13 D 6 12 D 7 11 A 10 B 9 C 7 G 6 W 5 Y U1174151 12 3 U12A 7486 12 3 U13A 7432 4 5 6 U12B 7486 45 6 U13B 7432 9 10 8 U13C 7432 1 2 U14A 7404 Gnd 6 1C 0 5 1C 1 4 1C 2 3 1C 3 10 2C 0 11 2C 1 12 2C 2 13 2C 3 14 A 2 B 1 1G 15 2G 7 1Y 9 2YU15 74153 6 1C 0 5 1C 1 4 1C 2 3 1C 3 10 2C 0 11 2C 1 12 2C 2 13 2C 3 14 A 2 B 1 1G 15 2G 7 1Y 9 2YU16 74153 6 1C 0 5 1C 1 4 1C 2 3 1C 3 10 2C 0 11 2C 1 12 2C 2 13 2C 3 14 A 2 B 1 1G 15 2G 7 1Y 9 2YU17 74153 6 1C 0 5 1C 1 4 1C 2 3 1C 3 10 2C 0 11 2C 1 12 2C 2 13 2C 3 14 A 2 B 1 1G 15 2G 7 1Y 9 2YU18 74153 31D 42D 73D 84D 135D 146D 177D 188D 11CK 1CL 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q U19 74273 +5 2 3 1 U20A 7402 5 6 4 U20B 7402 8 9 10 U20C 7402 11 12 13 U20D 7402 1 2 4 5 6 U21A 7420 3 4 U14B 7404 5 6 U14C 7404 1 2 3 4