diff --git a/devices/viacuda.cpp b/devices/viacuda.cpp
index e559f90..731316d 100644
--- a/devices/viacuda.cpp
+++ b/devices/viacuda.cpp
@@ -370,6 +370,16 @@ void ViaCuda::pseudo_command(int cmd, int data_count) {
         this->out_buf[3] = this->poll_rate;
         this->out_count++;
         break;
+    case CUDA_SET_DEVICE_LIST:
+        response_header(CUDA_PKT_PSEUDO, 0);
+        this->device_mask = ((uint16_t)in_buf[2]) >> 8;
+        this->device_mask += ((uint16_t)in_buf[3]);
+        break;
+    case CUDA_GET_DEVICE_LIST:
+        response_header(CUDA_PKT_PSEUDO, 0);
+        this->out_buf[2] = (uint8_t)((this->device_mask >> 8) & 0xFF);
+        this->out_buf[3] = (uint8_t)((this->device_mask) & 0xFF);
+        break;
     case CUDA_READ_WRITE_I2C:
         response_header(CUDA_PKT_PSEUDO, 0);
         i2c_simple_transaction(this->in_buf[2], &this->in_buf[3], this->in_count - 3);
diff --git a/devices/viacuda.h b/devices/viacuda.h
index e6d16c8..7197f95 100644
--- a/devices/viacuda.h
+++ b/devices/viacuda.h
@@ -102,6 +102,8 @@ enum {
     CUDA_FILE_SERVER_FLAG    = 0x13, /* set file server flag */
     CUDA_SET_AUTOPOLL_RATE   = 0x14, /* set auto-polling rate */
     CUDA_GET_AUTOPOLL_RATE   = 0x16, /* get auto-polling rate */
+    CUDA_SET_DEVICE_LIST     = 0x19, /* set device list */
+    CUDA_GET_DEVICE_LIST     = 0x1A, /* get device list */
     CUDA_READ_WRITE_I2C      = 0x22, /* read/write I2C device */
     CUDA_COMB_FMT_I2C        = 0x25, /* combined format I2C transaction */
     CUDA_OUT_PB0             = 0x26, /* output one bit to Cuda's PB0 line */
@@ -144,6 +146,7 @@ private:
     int32_t real_time = 0;
     bool file_server;
     uint16_t m6805_address = 0x1100;
+    uint16_t device_mask   = 0;
 
     bool is_open_ended;
     uint8_t curr_i2c_addr;