diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 7d85b74b..0198bb1c 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -7,8 +7,6 @@ on:
 
 permissions:
   contents: read
-  pull-requests: write
-  issues: write
 
 jobs:
   build:
@@ -40,7 +38,7 @@ jobs:
       - name: Check that every machine definition can be compiled
         run: cd branch && make machine_check
       - name: Make project (4x2/RTL8372)
-        run: cd branch && make CI=1 MACHINE="KP_9000_6XHML_X2" && cp output/KP_9000_6XHML_X2/rtlplayground.map /tmp/branch.map
+        run: mkdir -p /tmp/branch /tmp/main && cd branch && make CI=1 MACHINE="KP_9000_6XHML_X2" && cp -r output/KP_9000_6XHML_X2/rtlplayground.map output/KP_9000_6XHML_X2/rtlplayground.mem output/KP_9000_6XHML_X2/html_min /tmp/branch/
       - name: Make project (8x1/RTL8373)
         run: cd branch && make CI=1 MACHINE="KP_9000_9XHML_X_V3_1"
       - name: Make project with the health instrumentation
@@ -49,10 +47,7 @@ jobs:
         run: |
           ln -s ../branch/toolchain main/toolchain
           PATH="$(echo "$PWD"/branch/toolchain/sdcc-*/bin):$PATH"
-          cd main && make CI=1 MACHINE="KP_9000_6XHML_X2" && cp output/KP_9000_6XHML_X2/rtlplayground.map /tmp/main.map
+          cd main && make CI=1 MACHINE="KP_9000_6XHML_X2" && cp -r output/KP_9000_6XHML_X2/rtlplayground.map output/KP_9000_6XHML_X2/rtlplayground.mem output/KP_9000_6XHML_X2/html_min /tmp/main/
       - name: Calculate bank growth
         run: |
-          sed -rn 's/^([XCD]SEG|(BANK[0-9])).*=\s+([0-9]+)\. bytes.*$/MAIN_\1=\3/p' /tmp/main.map | sort -u >> "$GITHUB_ENV"
-          sed -rn 's/^([XCD]SEG|(BANK[0-9])).*=\s+([0-9]+)\. bytes.*$/BRANCH_\1=\3/p' /tmp/branch.map | sort -u >> "$GITHUB_ENV"
-          du -sb main/output/KP_9000_6XHML_X2/html_min | awk '{print "MAIN_WEB="$1}' >> "$GITHUB_ENV"
-          du -sb branch/output/KP_9000_6XHML_X2/html_min | awk '{print "BRANCH_WEB="$1}' >>"$GITHUB_ENV"
+          bash branch/tools/bank_occupancy.sh KP_9000_6XHML_X2 /tmp/main /tmp/branch >> "$GITHUB_STEP_SUMMARY"
diff --git a/tools/bank_occupancy.sh b/tools/bank_occupancy.sh
index 8638d390..4e895c33 100755
--- a/tools/bank_occupancy.sh
+++ b/tools/bank_occupancy.sh
@@ -1,31 +1,40 @@
 #!/bin/bash
 MACHINE="$1"
-if [[ ! -s output-main/rtlplayground.map ]]; then
+MAIN="${2:-output-main}"
+BRANCH="${3:-output/$MACHINE}"
+if [[ ! -s "$MAIN/rtlplayground.map" ]]; then
     original_branch=$(git branch --show-current)
     #trap 'git switch "$original_branch"' EXIT
-    git switch main && make CI=1 MACHINE="$MACHINE" BUILDDIR=output-main
+    git switch main && make CI=1 MACHINE="$MACHINE" BUILDDIR="$MAIN"
     git switch "$original_branch"
 fi
-source <(sed -rn 's/^([XCD]SEG|(BANK[0-9])).*=\s+([0-9]+)\. bytes.*$/main_\1=\3/p' output-main/rtlplayground.map | sort -u)
-
-main_WEB=$(du -sb output-main/html_min | awk '{print $1}')
-if [[ ! -s "output/$MACHINE/rtlplayground.map" ]]; then
-    make CI=1 MACHINE="$MACHINE"
+if [[ ! -s "$BRANCH/rtlplayground.map" ]]; then
+    make CI=1 MACHINE="$MACHINE" BUILDDIR="$BRANCH"
 fi
-source <(sed -rn 's/^([XCD]SEG|(BANK[0-9])).*=\s+([0-9]+)\. bytes.*$/branch_\1=\3/p' output/"$MACHINE"/rtlplayground.map | sort -u)
-branch_WEB=$(du -sb output/html_min | awk '{print $1}')
+
+seg() {
+    sed -rn "s/^$1[^=]*=\s+([0-9]+)\. bytes.*$/\1/p" "$2/rtlplayground.map" | head -n 1
+}
+
+stack() {
+    sed -rn 's/.* with ([0-9]+) bytes available.*/\1/p' "$1/rtlplayground.mem"
+}
+
+web() {
+    du -sb "$1/html_min" | awk '{print $1}'
+}
 
 print_line() {
   local name=$1 main=$2 branch=$3
-  printf '%-20s %-20s %-20s %-20s\n' "$name" "$main" "$branch" "$((branch - main))"
+  printf '| %-15s | %7s | %7s | %7s |\n' "$name" "$main" "$branch" "$((${branch:-0} - ${main:-0}))"
 }
 
-printf '%-20s %-20s %-20s %-20s\n' "segment" "main" "branch" "change"
-
-print_line "BANK1" "$main_BANK1" "$branch_BANK1"
-print_line "BANK2" "$main_BANK2" "$branch_BANK2"
-print_line "BANK3" "$main_BANK3" "$branch_BANK3"
-print_line "CSEG" "$main_CSEG" "$branch_CSEG"
-print_line "DSEG" "$main_DSEG" "$branch_DSEG"
-print_line "XSEG" "$main_XSEG" "$branch_XSEG"
-print_line "WEB" "$main_WEB" "$branch_WEB"
+echo "### $MACHINE"
+echo
+printf '| %-15s | %7s | %7s | %7s |\n' "segment" "main" "branch" "change"
+echo "| --------------- | ------: | ------: | ------: |"
+for s in HOME CSEG BANK1 BANK2 BANK3 BANK4 DSEG XSEG; do
+    print_line "$s" "$(seg "$s" "$MAIN")" "$(seg "$s" "$BRANCH")"
+done
+print_line "stack available" "$(stack "$MAIN")" "$(stack "$BRANCH")"
+print_line "WEB" "$(web "$MAIN")" "$(web "$BRANCH")"