diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
new file mode 100644
index 00000000..2516bf1f
--- /dev/null
+++ b/.github/workflows/tests.yml
@@ -0,0 +1,26 @@
+name: Tests CI
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    container:
+      image: ghcr.io/pandablocks/pandablocks-dev-container:latest
+      volumes:
+        - ${{ github.workspace }}/build:/build
+
+    steps:
+      - name: Checkout Source
+        uses: actions/checkout@v2
+        with:
+          path: PandABlocks-server
+
+      - name: Run the server regression tests
+        run: |
+          cd PandABlocks-server
+          ln -s CONFIG.example CONFIG
+          make sim_server
+          make -C tests
diff --git a/server/sim_hardware.c b/server/sim_hardware.c
index 5053d7bd..4e98b877 100644
--- a/server/sim_hardware.c
+++ b/server/sim_hardware.c
@@ -250,15 +250,15 @@ error__t hw_long_table_write(
 {
     ASSERT_OK(0 <= block_id  &&  block_id < (int) block_id_count);
     struct table_block *block = &block_id_table[block_id];
+    size_t nbytes = length * sizeof(uint32_t);
 
-    memcpy(block->data, data, length);
-
-    uint32_t words = (uint32_t) length / sizeof(uint32_t);
+    memcpy(block->data, data, nbytes);
+    ASSERT_OK(length == (uint32_t) length);
     WITH_MUTEX(mutex)
         handle_error(
             write_command_int('T',
-                block->block_base, block->number, 0, words)  ?:
-            write_all(block->data, length));
+                block->block_base, block->number, 0, (uint32_t) length)  ?:
+            write_all(block->data, nbytes));
     return ERROR_OK;
 }
 
diff --git a/tests/transcript b/tests/transcript
index f3b0bbd6..f367132e 100644
--- a/tests/transcript
+++ b/tests/transcript
@@ -231,14 +231,14 @@
 < PCOMP2.TABLE.LENGTH?
 > OK =3
 
-< PCOMP2.TABLE<<
+< PCOMP2.TABLE<
 < 1 2 3 4 5 6 7 8
 < 9
 <
 > OK
 
 < PCOMP2.TABLE.LENGTH?
-> OK =12
+> OK =9
 
 < SEQ2.TABLE<
 < 1 2 3 4 5 6 7 8
@@ -246,11 +246,6 @@
 <
 > ERR Table write is not a whole number of rows
 
-< SEQ2.TABLE<
-< 1 2 3 4 5 6 7 8
-<
-> OK
-
 < SEQ2.TABLE<B
 < 1234567
 <
@@ -266,16 +261,19 @@
 <
 > OK
 
-< SEQ2.TABLE<<
-< 1 2 3 4 5 6 7 8
-<
-> OK
-
 < SEQ2.TABLE?
 > !3891817943
 > !16055470
 > !964615029
 > !4046827
+> .
+
+< SEQ2.TABLE<
+< 1 2 3 4 5 6 7 8
+<
+> OK
+
+< SEQ2.TABLE?
 > !1
 > !2
 > !3
@@ -320,7 +318,7 @@
 < PCOMP2.TABLE<B
 < 123456789AB=
 <
-< PCOMP2.TABLE<<
+< PCOMP2.TABLE<
 < 1 2 3 4 5 6 7 8
 < 9
 <
@@ -464,7 +462,32 @@
 < *CHANGES.ATTR=
 > OK
 
+# Polled attributes changes are cleared by reading them
+< *CHANGES.ATTR?
+> !PCOMP1.TABLE.QUEUED_LINES=0
+> !PCOMP2.TABLE.QUEUED_LINES=0
+> !PCOMP3.TABLE.QUEUED_LINES=0
+> !PCOMP4.TABLE.QUEUED_LINES=0
+> !PGEN1.TABLE.QUEUED_LINES=0
+> !PGEN2.TABLE.QUEUED_LINES=0
+> !SEQ1.TABLE.QUEUED_LINES=0
+> !SEQ2.TABLE.QUEUED_LINES=0
+> !SEQ3.TABLE.QUEUED_LINES=0
+> !SEQ4.TABLE.QUEUED_LINES=0
+> .
+
+# TODO: remove QUEUED_LINES entries when pull request #71 get merged
 < *CHANGES.ATTR?
+> !PCOMP1.TABLE.QUEUED_LINES=0
+> !PCOMP2.TABLE.QUEUED_LINES=0
+> !PCOMP3.TABLE.QUEUED_LINES=0
+> !PCOMP4.TABLE.QUEUED_LINES=0
+> !PGEN1.TABLE.QUEUED_LINES=0
+> !PGEN2.TABLE.QUEUED_LINES=0
+> !SEQ1.TABLE.QUEUED_LINES=0
+> !SEQ2.TABLE.QUEUED_LINES=0
+> !SEQ3.TABLE.QUEUED_LINES=0
+> !SEQ4.TABLE.QUEUED_LINES=0
 > .
 
 < INENC2.VAL.CAPTURE=Mean
@@ -504,10 +527,10 @@
 > ERR Time setting out of range
 
 < PULSE1.DELAY.RAW=3
-> ERR Value too small
+> OK
 
 < PULSE1.DELAY=2e-8
-> ERR Value too small
+> OK
 
 # Table support
 < SEQ.TABLE.*?
@@ -516,6 +539,8 @@
 > !ROW_WORDS
 > !LENGTH
 > !FIELDS
+> !QUEUED_LINES
+> !MODE
 > !INFO
 > .