1 // Cut this out as emm.c
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4 * Module: All Modules
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5 * Author(s): Chris Somers
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6 * Date: December 1, 1992
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9 minor mods by Alex Russell to simplify
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11 Must use memory model with FAR code
13 Open Watcom patch by sparky4~
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24 #define PEMMDATAPAGENUM 4
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26 void TransformData(char *pEmmData, unsigned int len)
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37 int main(int argc, char *argv[])
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43 char huge *p =(char huge *)(GetEMMSeg0()*0x10000);
45 if(OpenEMM() != SUCCESS)
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46 { // make sure we got EMM
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47 printf("EMM unavailable.\n");
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52 printf("Emm %x available\n", EMVer());
53 printf("EMS pages available are %lu\n", EMMCoreLeft());
54 //printf("EMM Hardware Information %lu\n", EMInfo());
57 printf("b4 EMS pEmmData=%p\n", pEmmData);
58 //printf("b4 EMS *pEmmData=%s\n", *pEmmData);
59 advi=EMMCoreLeft()*EMMPAGESIZE;
60 printf("advi=%lu\n", advi);
62 pEmmData = (byte *)EMMalloc(&hEData, EMMCoreLeft()); // get 6 * 16K bytes - 96K
63 if(pEmmData == NULL/* || pEmmData0 == NULL*/)
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65 printf("Not enough EMM or out of handles.\n");
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69 printf("EMM allocate OK\n");
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71 printf("EMS pages available are %lu\n", EMMCoreLeft());
75 printf("Map 1st 4 pages\n");
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76 MapEMM(hEData, 0, PEMMDATAPAGENUM); // load 1st 4 pages into page frame: 0-3
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77 //memset(pEmmData, 0x0e, 64000u);
78 //0000 printf("(advi*EMMPAGESIZE)=%lu\n", advi);
79 memset(pEmmData, atoi(argv[1]), 0xffff);//sizeof(atoi(argv[1])));//((EMMCoreLeft())*EMMPAGESIZE));
80 //qqqq memset(pEmmData+0x10000, atoi(argv[1]), 0xffff);//sizeof(atoi(argv[1])));//((EMMCoreLeft())*EMMPAGESIZE));
81 //---- UnmapEMM(hEData, 0, 4); // not absolutely necessary
82 printf("%p= %c %c %c %c %c %c %c %c\n", pEmmData,
83 *pEmmData, *(pEmmData+1), *(pEmmData+2), *(pEmmData+3), *(pEmmData+4), *(pEmmData+5), *(pEmmData+6), *(pEmmData+7));
85 /*printf("Map next 2 pages\n");
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86 MapEMM(hEData, 4, 2); // map last 2 pages: 4-5
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87 memset(pEmmData, 0x04, 32768u);
88 // memset(pEmmData, atoi(argv[0]), 32768u);
89 printf("*pEmmData=%c\n", *pEmmData);
90 printf(" pEmmData=%p\n", pEmmData);*/
92 /*MapEMM(hEData, 0, 4);
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93 // do some stuff with the first 64K of file data.
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94 printf("Transform data\n");
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95 TransformData(pEmmData, 64000UL);
96 printf("*pEmmData=%lu\n", *pEmmData);
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97 MapEMM(hEData, 4, 2); // only unmaps 1st two pages of prior 64k mapping
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98 // do stuff with remaining 32K of data
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99 TransformData(pEmmData, 32768UL);
100 printf("*pEmmData=%lu\n", *pEmmData);*/
103 while(p<(char huge *)((GetEMMSeg0()*0x10000)+0xffff) && !kbhit())
105 if((i%16)==0) printf("%p= %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c\n", p,
106 *p, *(p+1), *(p+2), *(p+3), *(p+4), *(p+5), *(p+6), *(p+7),
107 *(p+8), *(p+9), *(p+10), *(p+11), *(p+12), *(p+13), *(p+14), *(p+15));
114 p =(char huge *)(GetEMMSeg0()*0x20000);
115 while(p<(char huge *)((GetEMMSeg0()*0x20000)+0xffff) && !kbhit())
117 if((i%16)==0) printf("%p= %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c\n", p,
118 *p, *(p+1), *(p+2), *(p+3), *(p+4), *(p+5), *(p+6), *(p+7),
119 *(p+8), *(p+9), *(p+10), *(p+11), *(p+12), *(p+13), *(p+14), *(p+15));
128 UnmapEMM(hEData, 0, PEMMDATAPAGENUM); // should unmap before freeing
129 //printf("after EMS *pEmmData=%c\n", *pEmmData);
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130 printf("Close emm\n");
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131 EMMFree(hEData); // finished with the file data
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134 printf("after EMS pEmmData=%p\n", pEmmData);
135 printf("EMS pages available are %lu\n", EMMCoreLeft());
136 printf("GetEMMSeg0=%p\n", GetEMMSeg0()*0x10000);
137 //printf("EMMPAGESIZE=%d\n", EMMPAGESIZE);