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synced 2025-06-10 23:02:38 +03:00
pc9801: save the egc pattern regs when set on write
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@ -729,7 +729,6 @@ void pc9801vm_state::egc_blit_w(uint32_t offset, uint16_t data, uint16_t mem_mas
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{
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if(BIT(m_egc.regs[2], 10))
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{
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m_egc.leftover[0] = 0;
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egc_shift(0, data);
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// leftover[0] is inited above, set others to same
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m_egc.leftover[1] = m_egc.leftover[2] = m_egc.leftover[3] = m_egc.leftover[0];
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@ -742,8 +741,6 @@ void pc9801vm_state::egc_blit_w(uint32_t offset, uint16_t data, uint16_t mem_mas
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if(m_egc.first)
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{
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mask &= dir ? ~((1 << dst_off) - 1) : ((1 << (16 - dst_off)) - 1);
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if(BIT(m_egc.regs[2], 10) && !m_egc.init)
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m_egc.leftover[0] = m_egc.leftover[1] = m_egc.leftover[2] = m_egc.leftover[3] = 0;
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m_egc.init = true;
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}
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@ -762,6 +759,15 @@ void pc9801vm_state::egc_blit_w(uint32_t offset, uint16_t data, uint16_t mem_mas
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mask &= end_mask;
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}
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// load all the plane pattern regs
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if((m_egc.regs[2] & 0x300) == 0x200)
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{
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m_egc.pat[0] = m_video_ram[1][offset + 0x4000];
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m_egc.pat[1] = m_video_ram[1][offset + (0x4000 * 2)];
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m_egc.pat[2] = m_video_ram[1][offset + (0x4000 * 3)];
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m_egc.pat[3] = m_video_ram[1][offset];
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}
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for(int i = 0; i < 4; i++)
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{
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if(!BIT(m_egc.regs[0], i))
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@ -770,9 +776,6 @@ void pc9801vm_state::egc_blit_w(uint32_t offset, uint16_t data, uint16_t mem_mas
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if(BIT(m_egc.regs[2], 10))
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src = egc_shift(i, data);
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if((m_egc.regs[2] & 0x300) == 0x200)
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pat = m_video_ram[1][offset + (((i + 1) & 3) * 0x4000)];
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switch((m_egc.regs[2] >> 11) & 3)
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{
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case 0:
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