amdcpu
fjalvingh
Rewrawn schematics from the book "Bit-slice Microprocessor design" from John Mick & James Brick
Components (26)
| Reference | Value | Description |
|---|---|---|
| U1 | 74LS377 | 8-bit Register |
| U2,U3,U11,U12 | Am2919 | Quad register with dual 3state outputs |
| U4-U6 | Am27S21 | 1024B (256x4) Bipolar PROM |
| U7 | Am2910 | 12bit microprogram controller |
| U8-U10,U24 | Am2918 | Quad D register with standard and 3state outputs |
| U13 | 74LS139 | Dual Decoder 1 of 4, Active low outputs |
| U14 | 74LS399 | Quad 2 to 1 line multiplexer with storage |
| U15,U37 | 74LS175 | 4-bit D Flip-Flop, reset |
| U16,U17 | Am2921 | One-of-8 decoder with 3state outputs and polarity control |
| U18,U19 | Am27S19 | 256bit (32x8) Bipolar PROM |
| U20,U21,U31,U32,U39,U40 | Am2920 | Octal D-flipflop with clear, clock enable and 3state control |
| U22,U23 | 74LS153 | |
| U25,U33-U36 | Am2922 | 8 input multiplexer select and polarity control register |
| U26-U29 | Am2903 | 4bit bpiolar bitslice ALU + 16 registers |
| U30 | Am2902A | |
| U38 | 74LS157 | Quad 2 to 1 line Multiplexer |
| U41-U44 | Am27S27 | 4096bit Bipolar registered PROM (512x8) with D type output register |
| U45-U53 | Am27S13 | 2048bit Bipolar PROM (512x4) ultra fast 30ns tri-state |
| U54 | 74LS04 | Hex Inverter |
| U55 | 74LS161 | Synchronous 4-bit programmable binary Counter |
| C1 | 68n | Unpolarized capacitor |
| J1 | Conn_02x20_Odd_Even | Generic connector, double row, 02x20, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/) |
| J2 | clksel | Generic connector, double row, 02x04, counter clockwise pin numbering scheme (similar to DIP package numbering), script generated (kicad-library-utils/schlib/autogen/connector/) |
| R1 | 680R | Resistor |
| R2-R4 | 1K | Resistor |
| Y1 | 1MHz | Two pin crystal |