Adrien Destugues | 16cf6ff | 2012-07-12 20:20:53 +0000 | [diff] [blame] | 1 | #include "27c020.h" |
| 2 | |
| 3 | #include <stdio.h> |
| 4 | #include <unistd.h> |
| 5 | |
| 6 | |
| 7 | x27C020::x27C020() |
| 8 | : Device() |
| 9 | { |
| 10 | } |
| 11 | |
| 12 | void x27C020::power() |
| 13 | { |
| 14 | Device::write(CTRL, 0b10011111 | CTRLmask); |
| 15 | Device::write(VOLT, 0b11001000 | VOLTmask); |
| 16 | outb(port + 2, NONE); |
| 17 | } |
| 18 | |
| 19 | void x27C020::read(const char* filename) |
| 20 | { |
| 21 | for (int address = 0; address < 256*1024; address++) |
| 22 | { |
| 23 | Device::write(VOLT, DOE | VOLTmask); |
| 24 | Device::write(CTRL, CE | OE | WE | A17 | CTRLmask); |
| 25 | usleep(1000); |
| 26 | |
| 27 | Device::write(ADR0, address); |
| 28 | usleep(1000); |
| 29 | Device::write(ADR1, address >> 8); |
| 30 | usleep(1000); |
| 31 | // TODO A16, A17 |
| 32 | Device::write(CTRL, WE | A17 | CTRLmask); |
| 33 | usleep(1000); |
| 34 | uint8_t val = Device::read(); |
| 35 | Device::write(CTRL, CE | OE | WE | A17 | CTRLmask); |
| 36 | |
| 37 | // TODO write to file, or stdout if file is null |
| 38 | putc(val, stdout); |
| 39 | // TODO flush every 512 bytes or so |
| 40 | fflush(stdout); |
| 41 | } |
| 42 | } |
| 43 | |
| 44 | void x27C020::write(const char* filename) |
| 45 | { |
| 46 | // TODO support it ! |
| 47 | puts("Writing not supported"); |
| 48 | } |
| 49 | |
| 50 | void x27C020::erase(void) |
| 51 | { |
| 52 | // TODO return error |
| 53 | puts("Erasing not supported"); |
| 54 | } |
| 55 | |