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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 54 | pj | 1 | /* VGAlib version 1.2 - (c) 1993 Tommy Frandsen */ |
| 2 | /* */ |
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| 3 | /* This library is free software; you can redistribute it and/or */ |
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| 4 | /* modify it without any restrictions. This library is distributed */ |
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| 5 | /* in the hope that it will be useful, but without any warranty. */ |
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| 6 | |||
| 7 | /* Multi-chipset support Copyright 1993 Harm Hanemaayer */ |
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| 8 | /* partially copyrighted (C) 1993 by Hartmut Schirmer */ |
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| 9 | |||
| 10 | #include <stdio.h> |
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| 11 | #include <string.h> |
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| 12 | #include "vga.h" |
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| 13 | #include "libvga.h" |
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| 14 | #include "driver.h" |
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| 15 | |||
| 16 | int vga_clear(void) |
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| 17 | { |
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| 18 | vga_screenoff(); |
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| 19 | if (MODEX) |
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| 20 | goto modeX; |
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| 21 | switch (CM) { |
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| 22 | case G320x200x256: |
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| 23 | case G320x240x256: |
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| 24 | case G320x400x256: |
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| 25 | case G360x480x256: |
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| 26 | case G400x300x256X: |
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| 27 | modeX: |
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| 28 | |||
| 29 | /* write to all planes */ |
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| 30 | __svgalib_outseq(0x02,0x0f); |
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| 31 | |||
| 32 | /* clear video memory */ |
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| 33 | memset(GM, 0, 65536); |
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| 34 | break; |
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| 35 | |||
| 36 | default: |
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| 37 | switch (CI.colors) { |
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| 38 | case 2: |
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| 39 | case 16: |
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| 40 | vga_setcolor(0); |
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| 41 | |||
| 42 | /* write to all bits */ |
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| 43 | __svgalib_outseq(0x08,0xff); |
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| 44 | |||
| 45 | default: |
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| 46 | { |
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| 47 | int i; |
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| 48 | int pages = (CI.ydim * CI.xbytes + 65535) >> 16; |
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| 49 | if (__svgalib_modeinfo_linearset & IS_LINEAR ) { |
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| 50 | memset(LINEAR_POINTER, 0, pages<<16); |
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| 51 | } else { |
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| 52 | for (i = 0; i < pages; ++i) { |
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| 53 | vga_setpage(i); |
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| 54 | /* clear video memory */ |
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| 55 | memset(GM, 0, 65536); |
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| 56 | } |
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| 57 | } |
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| 58 | } |
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| 59 | break; |
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| 60 | } |
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| 61 | break; |
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| 62 | } |
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| 63 | |||
| 64 | vga_setcolor(15); |
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| 65 | vga_screenon(); |
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| 66 | |||
| 67 | return 0; |
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| 68 | } |