fork of PCE focusing on macplus, supporting DaynaPort SCSI network emulation
rc759: Only mark the NVM as modified if it was actually modified
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-13
+20
-13
src/arch/rc759/nvm.c
+20
-13
src/arch/rc759/nvm.c
···
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/*****************************************************************************
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* File name: src/arch/rc759/nvm.c *
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* Created: 2012-07-02 by Hampa Hug <hampa@hampa.ch> *
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* Copyright: (C) 2012-2021 Hampa Hug <hampa@hampa.ch> *
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* Copyright: (C) 2012-2025 Hampa Hug <hampa@hampa.ch> *
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*****************************************************************************/
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/*****************************************************************************
···
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* *
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* This program is distributed in the hope that it will be useful, but *
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* WITHOUT ANY WARRANTY, without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General *
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* Public License for more details. *
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*****************************************************************************/
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···
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v += nvm->data[i];
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}
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nvm->data[0] = (0xaa - v) & 0xff;
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rc759_nvm_set_uint8 (nvm, 0, (0xaa - v) & 0xff);
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}
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void rc759_nvm_sanitize (rc759_nvm_t *nvm)
···
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if (nvm->data[0x1a] < 2) {
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/* data buffers */
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nvm->data[0x1a] = 2;
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nvm->modified = 1;
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}
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}
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···
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void rc759_nvm_set_uint4 (rc759_nvm_t *nvm, unsigned idx, unsigned char val)
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{
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unsigned char *p;
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unsigned char *ptr;
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unsigned char msk;
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if (idx < (2 * RC759_NVM_SIZE)) {
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p = &nvm->data[idx >> 1];
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}
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else {
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if (idx >= (2 * RC759_NVM_SIZE)) {
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return;
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}
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ptr = &nvm->data[idx >> 1];
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if (idx & 1) {
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*p = (*p & 0xf0) | (val & 0x0f);
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msk = 0x0f;
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}
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else {
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*p = (*p & 0x0f) | ((val << 4) & 0xf0);
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msk = 0xf0;
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val = val << 4;
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}
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nvm->modified = 1;
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if ((*ptr & msk) != (val & msk)) {
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*ptr = (*ptr & ~msk) | (val & msk);
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nvm->modified = 1;
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}
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}
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unsigned char rc759_nvm_get_uint8 (const rc759_nvm_t *nvm, unsigned idx)
···
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void rc759_nvm_set_uint8 (rc759_nvm_t *nvm, unsigned idx, unsigned char val)
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{
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if (idx < RC759_NVM_SIZE) {
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nvm->data[idx] = val;
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nvm->modified = 1;
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if (nvm->data[idx] != val) {
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nvm->data[idx] = val;
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nvm->modified = 1;
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}
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}
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}