Fixed contents of DMA related registers after a DMA completes

Co-Authored-By: Matt Pharoah <mtpharoah@gmail.com>

Author: 2 people

src/device/rcp/rsp/rsp_core.c

@@ -64,6 +64,10 @@ static void do_sp_dma(struct rsp_core* sp, const struct sp_dma* dma)
             post_framebuffer_write(&sp->dp->fb, dramaddr - length, length);
             dramaddr+=skip;
         }
+
+    sp->regs[SP_MEM_ADDR_REG] = memaddr & 0xfff;
+    sp->regs[SP_DRAM_ADDR_REG] = dramaddr & 0xffffff;
+    sp->regs[SP_RD_LEN_REG] = 0xff8;
     }
     else
     {
@@ -77,6 +81,10 @@ static void do_sp_dma(struct rsp_core* sp, const struct sp_dma* dma)
             }
             dramaddr+=skip;
         }
+
+    sp->regs[SP_MEM_ADDR_REG] = memaddr & 0xfff;
+    sp->regs[SP_DRAM_ADDR_REG] = dramaddr & 0xffffff;
+    sp->regs[SP_RD_LEN_REG] = 0xff8;
     }
 
     /* schedule end of dma event */
@@ -224,6 +232,8 @@ void poweron_rsp(struct rsp_core* sp)
     sp->rsp_task_locked = 0;
     sp->mi->r4300->cp0.interrupt_unsafe_state &= ~INTR_UNSAFE_RSP;
     sp->regs[SP_STATUS_REG] = 1;
+    sp->regs[SP_RD_LEN_REG] = 0xff8;
+    sp->regs[SP_WR_LEN_REG] = 0xff8;
 }