HW_VGA
daveho
Just for fun, attempt at hardware to generate a 640x480 VGA text mode
Components (20)
| Reference | Value | Description |
|---|---|---|
| U1 | 25.175 MHz | |
| U102,U202,U301,U601,U605,U707,U803 | GAL22V10 | |
| U103-U105,U203-U205,U701-U703 | 74ACT163 | Synchronous 4-bit programmable binary Counter |
| U401 | 74ACT157 | Quad 2 to 1 line Multiplexer |
| U403,U804 | 74ACT574 | 8-bit Register, 3-state outputs |
| U602,U604 | 74HCT574 | 8-bit Register, 3-state outputs |
| U603 | 27SF512 | |
| U705,U706 | 74ACT273 | 8-bit D Flip-Flop, reset |
| U801,U802 | IDT7134 | |
| C1-C5,C102-C105,C202-C205,C301,C401,C403,C701-C703,C705-C707,C801-C804 | 100 nF | Unpolarized capacitor |
| C6 | 22μF | |
| J1 | Conn_02x40_Odd_Even | |
| J401 | Conn_01x06 | Generic connector, single row, 01x06, script generated (kicad-library-utils/schlib/autogen/connector/) |
| R401,R405,R409 | 620 | Resistor |
| R402,R406,R410 | 75 | Resistor |
| R403,R407,R411 | 1K | Resistor |
| R404,R408,R412 | 390 | Resistor |
| R601 | 4k7 | Resistor |
| RN201 | 4K7 | 10 resistor network, star topology, bussed resistors, small symbol |
| SW201 | SW_DIP_x10 | 10x DIP Switch, Single Pole Single Throw (SPST) switch, small symbol |