diff --git a/.appveyor.yml b/.appveyor.yml
new file mode 100644
index 0000000..84e2906
--- /dev/null
+++ b/.appveyor.yml
@@ -0,0 +1,95 @@
+# .appveyor.yml for use with EPICS Base ci-scripts
+# (see: https://github.com/epics-base/ci-scripts)
+
+# This is YAML - indentation levels are crucial
+
+#---------------------------------#
+#       repository cloning        #
+#---------------------------------#
+
+# Called at very beginning, before repo cloning
+init:
+  # Set autocrlf to make batch files work
+  - git config --global core.autocrlf true
+
+# Set clone depth (do not fetch complete history)
+clone_depth: 50
+
+# Skipping commits affecting only specific files
+skip_commits:
+  files:
+    - 'documentation/*'
+    - 'templates/*'
+    - '**/*.html'
+    - '**/*.md'
+
+#---------------------------------#
+#   build matrix configuration    #
+#---------------------------------#
+
+# Build Configurations: dll/static, regular/debug
+configuration:
+  - dynamic
+  - static
+  - dynamic-debug
+  - static-debug
+
+# Environment variables: compiler toolchain
+environment:
+  SETUP_PATH: .
+
+  matrix:
+  - CC: mingw
+    APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+    BASE: 7.0
+  - CC: vs2019
+    APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+    BASE: 7.0
+  - CC: vs2017
+    APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+    BASE: 7.0
+  - CC: vs2015
+    BASE: 7.0
+
+# Platform: architecture
+platform:
+  - x64
+
+#---------------------------------#
+#     building & testing          #
+#---------------------------------#
+
+install:
+  - cmd: git submodule update --init --recursive
+  - cmd: python .ci/appveyor/do.py prepare
+  - cmd: python .ci/appveyor/do.py exec python .ci-local/appveyor-libevent.py
+
+build_script:
+  - cmd: python .ci/appveyor/do.py build
+
+test_script:
+  - cmd: python .ci/appveyor/do.py --add-path "{TOP}\bundle\usr-{EPICS_HOST_ARCH}\lib" test
+
+on_finish:
+  - ps: Get-ChildItem *.tap -Recurse -Force | % { Push-AppveyorArtifact $_.FullName -FileName $_.Name }
+  - cmd: python .ci/appveyor/do.py build test-results -s
+
+
+#---------------------------------#
+#         debugging               #
+#---------------------------------#
+
+## if you want to connect by remote desktop to a failed build, uncomment these lines
+## note that you will need to connect within the usual build timeout limit (60 minutes)
+## so you may want to adjust the build matrix above to just build the one of interest
+
+#on_failure:
+#  - ps: iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))
+#  - ps: $blockRdp = $true; iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))
+
+#---------------------------------#
+#         notifications           #
+#---------------------------------#
+
+notifications:
+  - provider: GitHubPullRequest
diff --git a/.ci b/.ci
index 7de5a7e..a8c44ae 160000
--- a/.ci
+++ b/.ci
@@ -1 +1 @@
-Subproject commit 7de5a7edc391d1b908828f2aa8118a5a6ce27021
+Subproject commit a8c44aeed8598c7cc369634deecb5c9a3d2a4141
diff --git a/.ci-local/appveyor-libevent.py b/.ci-local/appveyor-libevent.py
new file mode 100644
index 0000000..f9de722
--- /dev/null
+++ b/.ci-local/appveyor-libevent.py
@@ -0,0 +1,44 @@
+#!/usr/bin/env python
+
+from __future__ import print_function
+
+import sys
+import os
+from glob import glob
+import subprocess as SP
+
+def check_call(cmd, shell=True, env=None):
+    print('CALLING', repr(cmd))
+    sys.stdout.flush()
+    sys.stderr.flush()
+    SP.check_call(cmd, shell=shell, env=env)
+    sys.stdout.flush()
+    sys.stderr.flush()
+    print('CALLED', repr(cmd))
+
+check_call('cmake --version')
+check_call('cmake --help')
+
+print('ENV')
+[print("  ", frag) for frag in os.environ['PATH'].split(os.pathsep)]
+print('PATH')
+[print("  ", K, "=", V) for K, V in os.environ.items()]
+
+# environment for sub-process
+env=os.environ.copy()
+CC = env.pop('CC') # both ci-scripts and cmake use this, with different sets of values...
+make = env.pop('MAKE', 'make')
+
+if CC=='mingw':
+    print('mingw versions')
+    for loc in glob(r'C:\mingw-w64\*\*\bin\gcc.exe'):
+        print('  ', loc)
+    check_call('gcc --version')
+
+# CMake MinGW generator doesn't like sh.exe in PATH
+# NMake generator doesn't care
+# strip it out
+env['PATH'] = os.pathsep.join([ent for ent in env['PATH'].split(os.pathsep) if not os.path.isfile(os.path.join(ent, 'sh.exe'))])
+
+check_call("{} -C bundle libevent".format(make),
+           env=env)
diff --git a/defaults.set b/defaults.set
index fbc341b..1e35c18 100644
--- a/defaults.set
+++ b/defaults.set
@@ -3,3 +3,4 @@ BASE_DIRNAME=base
 BASE_REPONAME=epics-base
 BASE_REPOOWNER=epics-base
 BASE_VARNAME=EPICS_BASE
+BASE_RECURSIVE=no