CGA_Redux
hkzlab
The Color Graphics Adapter Redux board is a more or less faithful clone of the original IBM CGA, based on the original schematics
Components (53)
| Reference | Value | Description |
|---|---|---|
| Q1 | 2N3904 | |
| U1 | 74S112 | |
| U2,U11 | 74LS74 | |
| U3 | 74S86 | |
| U4,U5,U101 | 74S174 | |
| U6,U16,U20 | 74LS04 | |
| U7,U8,U32 | 74LS166 | |
| U9,U10 | 74153 | |
| U12 | 74LS393 | |
| U13,U41 | 74LS08 | |
| U14 | 74S32 | |
| U15,U25,U46 | 74LS00 | |
| U17-U19 | 74LS138 | |
| U21,U39,U40 | 74LS174 | |
| U22,U27,U47,U48 | 74LS51 | |
| U23,U30 | 74LS32 | |
| U24,U36,U67 | 74LS244 | |
| U26,U29 | 74S04 | |
| U28 | 74S10 | |
| U31 | 74S08 | |
| U33 | 27C256 | |
| U34,U35 | 74LS273 | |
| U37,U58-U61 | 74LS374 | |
| U38 | MC6845 | |
| U42,U68 | 74LS86 | |
| U43,U44 | 74S74 | |
| U45 | 74LS151 | |
| U49,U65 | 74LS02 | |
| U50-U57 | 2118 | |
| U62 | 74LS125 | |
| U63 | 74LS175 | |
| U64 | 74LS164 | |
| U66 | 74LS245 | |
| C1-C19,C25,C28-C30,C33-C49,C51-C80 | 100nF | |
| C20-C23,C31,C32 | 47p | |
| C24,C26,C27 | 10uF | |
| J1 | COMPOSITE OUT | |
| J2 | RGBI Output | |
| JP1 | Comp Mod | |
| P1 | 1X4 BERG | |
| P2 | 1X6 BERG | |
| P5 | Bus_ISA_8bit | |
| R1 | 75 | |
| R4 | 20 | |
| R5,R7 | 680 | |
| R6 | 1k | |
| R8 | 750 | |
| R11-R14 | 30 | |
| R17 | 130 | |
| R18 | 2k | |
| R19 | 3k | |
| R20 | 360 | |
| R90 | 0 |