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[SCD] fixed & improved emulation of PRG-RAM write protection register (broken by previous revision): fixes Lunar - Eternal Blue (J)
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@ -92,6 +92,12 @@ void prg_ram_dma_w(unsigned int words)
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/* update DMA source address */
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cdc.dac.w += (words << 1);
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/* check PRG-RAM write protected area */
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if (dst_index < (scd.regs[0x02>>1].byte.h << 9))
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{
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return;
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}
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/* DMA transfer */
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while (words--)
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{
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@ -650,6 +650,12 @@ void ctrl_io_write_byte(unsigned int address, unsigned int data)
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return;
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}
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case 0x02: /* PRG-RAM Write Protection */
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{
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scd.regs[0x02>>1].byte.h = data;
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return;
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}
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case 0x03: /* Memory mode */
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{
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m68k_poll_sync(0x02);
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