[VM][FMTOWNS][CDROM] Force DMA interrupt even DMA count != 0.May fix for YUMIMI MIX.

diff --git a/source/src/vm/fmtowns/towns_cdrom.cpp b/source/src/vm/fmtowns/towns_cdrom.cpp
index c3b2519..4e483f9 100644 (file)
--- a/source/src/vm/fmtowns/towns_cdrom.cpp
+++ b/source/src/vm/fmtowns/towns_cdrom.cpp
@@ -576,10 +576,11 @@ void TOWNS_CDROM::write_signal(int id, uint32_t data, uint32_t mask)
        case SIG_TOWNS_CDROM_DMAINT:
                if((data & mask) != 0) {
 //                     if(dma_transfer_phase) {
-#if 1
 //                     if(read_length <= 0) {
 //                     clear_event(event_next_sector);
 //                     clear_event(event_seek_completed);
+       #if 1
+                       if((read_length > 0) || !(databuffer->empty())) {
                        if(!(dma_intr_mask)) {
                                dma_intr = true;
                                mcu_intr = false;
@@ -595,6 +596,9 @@ void TOWNS_CDROM::write_signal(int id, uint32_t data, uint32_t mask)
                                dma_transfer_phase = false;
                                if(stat_reply_intr) write_signals(&outputs_mcuint, 0xffffffff);
                        }
+                       }
+       #endif
+#if 0
                        if(read_length <= 0) {
                                clear_event(event_drq);
                                clear_event(event_next_sector);
@@ -1028,10 +1032,29 @@ uint8_t TOWNS_CDROM::read_status()
 uint32_t TOWNS_CDROM::read_dma_io8(uint32_t addr)
 {
        data_reg = (uint8_t)(databuffer->read() & 0xff);
-//     if(databuffer->empty()) {
-//             clear_event(event_drq);
+       if((databuffer->empty()) && (read_length <= 0)) {
+               if(!(dma_intr_mask)) {
+                       dma_intr = true;
+                       mcu_intr = false;
+                       dma_transfer_phase = false;
+                       write_signals(&outputs_mcuint, 0xffffffff);
+               } else {
+//                             mcu_intr = true;
+                       mcu_intr = false;
+                       dma_intr = true;
+                       if(read_length > 0) {
+                               mcu_ready = true;
+                       }
+                       dma_transfer_phase = false;
+                       if(stat_reply_intr) write_signals(&outputs_mcuint, 0xffffffff);
+               }
+               clear_event(event_drq);
+               clear_event(event_next_sector);
+               clear_event(event_seek_completed);
+               status_read_done(req_status);
+               out_debug_log(_T("EOT(DMA"));
 //             dma_transfer_phase = false;
-//     }
+       }
        return data_reg;
 }