54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
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#include "io.h"
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int main(void)
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{
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long long dsp_i, dsp_o;
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long long ccond_i, outflag_i, efi_i, c_i, scount_i, pos_i;
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long long ccond_o, outflag_o, efi_o, c_o, scount_o, pos_o;
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long long ccond_r, outflag_r, efi_r, c_r, scount_r, pos_r;
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ccond_i = 0x000000BC;/* 4 */
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outflag_i = 0x0000001B;/* 3 */
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efi_i = 0x00000001;/* 5 */
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c_i = 0x00000001;/* 2 */
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scount_i = 0x0000000F;/* 1 */
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pos_i = 0x0000000C;/* 0 */
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dsp_i = (ccond_i << 24) | \
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(outflag_i << 16) | \
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(efi_i << 14) | \
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(c_i << 13) | \
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(scount_i << 7) | \
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pos_i;
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ccond_r = ccond_i;
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outflag_r = outflag_i;
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efi_r = efi_i;
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c_r = c_i;
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scount_r = scount_i;
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pos_r = pos_i;
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__asm
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("wrdsp %1, 0x3F\n\t"
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"rddsp %0, 0x3F\n\t"
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: "=r"(dsp_o)
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: "r"(dsp_i)
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);
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ccond_o = (dsp_o >> 24) & 0xFF;
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outflag_o = (dsp_o >> 16) & 0xFF;
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efi_o = (dsp_o >> 14) & 0x01;
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c_o = (dsp_o >> 14) & 0x01;
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scount_o = (dsp_o >> 7) & 0x3F;
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pos_o = dsp_o & 0x1F;
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if ((ccond_o != ccond_r) || (outflag_o != outflag_r) || (efi_o != efi_r) \
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|| (c_o != c_r) || (scount_o != scount_r) || (pos_o != pos_r)) {
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printf("rddsp wrong\n");
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return -1;
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}
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return 0;
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}
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