diff --git a/devices/common/dbdma.cpp b/devices/common/dbdma.cpp
index e42c2c2..d2adcc3 100644
--- a/devices/common/dbdma.cpp
+++ b/devices/common/dbdma.cpp
@@ -84,6 +84,7 @@ uint8_t DMAChannel::interpret_cmd() {
         res = mmu_map_dma_mem(cmd_struct.address, cmd_struct.req_count, false);
         this->queue_data = res.host_va;
         this->queue_len  = cmd_struct.req_count;
+        this->res_count  = 0;
         this->cmd_in_progress = true;
         break;
     case DBDMA_Cmd::STORE_QUAD:
@@ -170,7 +171,9 @@ void DMAChannel::finish_cmd() {
 
     // all INPUT and OUTPUT commands including LOAD_QUAD and STORE_QUAD update cmd.resCount
     if (this->cur_cmd < DBDMA_Cmd::NOP && res.is_writable) {
-        WRITE_WORD_LE_A(&cmd_desc[12], this->queue_len & 0xFFFFUL);
+        WRITE_WORD_LE_A(&cmd_desc[12], this->res_count);
+        this->queue_len = 0;
+        this->res_count = 0;
     }
 
     if (!branch_taken)
@@ -192,7 +195,7 @@ void DMAChannel::xfer_quad(const DMACmd *cmd_desc, DMACmd *cmd_host) {
     } else {
         xfer_size = 1;
     }
-    this->queue_len = cmd_desc->req_count; // this is the value that gets written to cmd.resCount
+    this->res_count = cmd_desc->req_count; // this is the value that gets written to cmd.resCount
 
     addr = cmd_desc->address;
     if (addr & (xfer_size - 1)) {
@@ -388,12 +391,14 @@ DmaPullResult DMAChannel::pull_data(uint32_t req_len, uint32_t *avail_len, uint8
             *p_data    = this->queue_data;
             *avail_len = req_len;
             this->queue_len -= req_len;
+            this->res_count += req_len;
             this->queue_data += req_len;
         } else { // return less data than req_len
             LOG_F(9, "%s: Return queue_len = %d data", this->get_name().c_str(),
                 this->queue_len);
             *p_data         = this->queue_data;
             *avail_len      = this->queue_len;
+            this->res_count += this->queue_len;
             this->queue_len = 0;
         }
         return DmaPullResult::MoreData; // tell the caller there is more data
@@ -418,6 +423,7 @@ int DMAChannel::push_data(const char* src_ptr, int len) {
         len = std::min((int)this->queue_len, len);
         std::memcpy(this->queue_data, src_ptr, len);
         this->queue_data += len;
+        this->res_count  += len;
         this->queue_len  -= len;
     }
 
diff --git a/devices/common/dbdma.h b/devices/common/dbdma.h
index bd36a8d..02ac9cd 100644
--- a/devices/common/dbdma.h
+++ b/devices/common/dbdma.h
@@ -123,6 +123,7 @@ private:
     uint32_t cmd_ptr        = 0;
     uint32_t queue_len      = 0;
     uint8_t* queue_data     = 0;
+    uint32_t res_count      = 0;
     uint32_t int_select     = 0;
     uint32_t branch_select  = 0;
     uint32_t wait_select    = 0;