55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
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#include<stdio.h>
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#include<assert.h>
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int main()
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{
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int dsp_i, dsp_o;
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int ccond_i, outflag_i, efi_i, c_i, scount_i, pos_i;
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int ccond_o, outflag_o, efi_o, c_o, scount_o, pos_o;
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int 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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assert(ccond_o == ccond_r);
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assert(outflag_o == outflag_r);
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assert(efi_o == efi_r);
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assert(c_o == c_r);
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assert(scount_o == scount_r);
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assert(pos_o == pos_r);
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return 0;
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}
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