diff --git a/.appveyor.yml b/.appveyor.yml
index 7590fb783..d426b0786 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -33,17 +33,7 @@ skip_commits:
     - 'templates/*'
     - '**/*.html'
     - '**/*.md'
-    - '.travis.yml'
-
-#---------------------------------#
-#       additional packages       #
-#---------------------------------#
-
-install:
-# fetch submodules (like ci-scripts)
-  - cmd: git submodule update --init --recursive
-# for the sequencer
-  - cinst re2c
+    - ".github/*"
 
 #---------------------------------#
 #   build matrix configuration    #
@@ -89,33 +79,23 @@ configuration:
 environment:
   # common / default variables for all jobs
   SETUP_PATH: .ci-local:.ci
+  BASE: "7.0"
 
   matrix:
+  - CMP: gcc
   - CMP: vs2019
-    BASE: "7.0"
-    SET: "deps2"
     APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
-  - CMP: gcc
-    BASE: "7.0"
-    SET: "deps2"
   - CMP: vs2019
     BASE: "3.15"
-    SET: "deps2"
     APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
   - CMP: vs2019
     BASE: "3.14"
-    SET: "deps1"
+    SET: "synapps-6.0"
     APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
-  #- CMP: vs2017
-  #  BASE: "7.0"
-  #  SET: "deps2"
-  #  APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+  - CMP: vs2017
+    APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
   - CMP: vs2015
-    BASE: "7.0"
-    SET: "deps2"
-  #- CMP: vs2013
-  #  BASE: "7.0"
-  #  SET: "deps2"
+  - CMP: vs2013
 
 # Platform: processor architecture
 platform:
@@ -125,28 +105,46 @@ platform:
 # Matrix configuration: exclude sets of jobs
 matrix:
   exclude:
+  # VS2012 and older installs don't have the 64 bit compiler
+  - platform: x64
+    CMP: vs2012
+  - platform: x64
+    CMP: vs2010
   # Exclude more jobs to reduce build time
   # E.g., skip 32-bit for newer compilers
   - platform: x86
     CMP: vs2019
-  #- platform: x86
-  #  CMP: vs2015
+  # MinGW debug builds use the same libraries, unlike VS
+  - configuration: dynamic-debug
+    CMP: gcc
+  - configuration: static-debug
+    CMP: gcc
 
 #---------------------------------#
 #     building & testing          #
 #---------------------------------#
 
-build_script:
+install:
+  - cmd: git submodule update --init --recursive
+# for the sequencer
+  - choco install re2c
+  - cmd: pip install git+https://github.com/mdavidsaver/ci-core-dumper#egg=ci-core-dumper
   - cmd: python .ci/cue.py prepare
+
+build_script:
   - cmd: python .ci/cue.py build
 
 test_script:
+  - cmd: python -m ci_core_dumper install
   - cmd: python .ci/cue.py -T 20M test
 
 on_finish:
   - ps: Get-ChildItem *.tap -Recurse -Force | % { Push-AppveyorArtifact $_.FullName -FileName $_.Name }
   - cmd: python .ci/cue.py -T 5M test-results
 
+on_failure:
+  - cmd: python -m ci_core_dumper report
+
 #---------------------------------#
 #         debugging               #
 #---------------------------------#
diff --git a/.ci-local/deps-latest.set b/.ci-local/deps-latest.set
deleted file mode 100644
index 4a2a26378..000000000
--- a/.ci-local/deps-latest.set
+++ /dev/null
@@ -1,8 +0,0 @@
-MODULES="sncseq sscan calc ipac"
-
-BASE_RECURSIVE=no
-
-SNCSEQ=master
-SSCAN=master
-CALC=master
-IPAC=master
diff --git a/.ci-local/deps1.set b/.ci-local/deps1.set
deleted file mode 100644
index 34dc30a23..000000000
--- a/.ci-local/deps1.set
+++ /dev/null
@@ -1,8 +0,0 @@
-MODULES="sncseq sscan calc ipac"
-
-BASE_RECURSIVE=no
-
-SNCSEQ=R2-2-8
-SSCAN=R2-11-3
-CALC=R3-7-3
-IPAC=2.15
diff --git a/.ci-local/deps2.set b/.ci-local/deps2.set
deleted file mode 100644
index 6f0fcae98..000000000
--- a/.ci-local/deps2.set
+++ /dev/null
@@ -1,8 +0,0 @@
-MODULES="sncseq sscan calc ipac"
-
-BASE_RECURSIVE=no
-
-SNCSEQ=R2-2-8
-SSCAN=R2-11-5
-CALC=R3-7-4
-IPAC=2.16
diff --git a/.ci-local/no-deps.set b/.ci-local/no-deps.set
deleted file mode 100644
index 45d901f82..000000000
--- a/.ci-local/no-deps.set
+++ /dev/null
@@ -1,3 +0,0 @@
-MODULES=""
-
-BASE_RECURSIVE=no
diff --git a/.ci-local/sscan-2.10.1-fix.patch b/.ci-local/sscan-2.10.1-fix.patch
new file mode 100644
index 000000000..697c65c28
--- /dev/null
+++ b/.ci-local/sscan-2.10.1-fix.patch
@@ -0,0 +1,20 @@
+diff --git a/sscanApp/src/Makefile b/sscanApp/src/Makefile
+index 7853dcb..012e246 100644
+--- a/sscanApp/src/Makefile
++++ b/sscanApp/src/Makefile
+@@ -44,15 +44,7 @@ ifdef SNCSEQ
+ endif
+ 
+ # save scan data stuff
+-# XDR not available on WIN32
+-ifeq ($(OS_CLASS), WIN32)
+ sscan_SRCS += saveData_writeXDR.c, writeXDR.c
+-else
+-sscan_SRCS += xdr_lib.c
+-sscan_SRCS += saveData.c
+-sscan_SRCS_vxWorks += xdr_stdio.c
+-sscan_SYS_LIBS_cygwin32 += $(CYGWIN_RPC_LIB)
+-endif
+ 
+ # for scanProgress
+ ifdef SNCSEQ
diff --git a/.ci-local/synapps-5.8.set b/.ci-local/synapps-5.8.set
new file mode 100644
index 000000000..de5ca095c
--- /dev/null
+++ b/.ci-local/synapps-5.8.set
@@ -0,0 +1,8 @@
+SNCSEQ=R2-2-1
+SSCAN=R2-10-1
+CALC=R3-4-2-1
+IPAC=2.12
+
+BASE=3.14
+
+SSCAN_HOOK=.ci-local/sscan-2.10.1-fix.patch
diff --git a/.ci-local/synapps-6.0.set b/.ci-local/synapps-6.0.set
new file mode 100644
index 000000000..1d525a6fb
--- /dev/null
+++ b/.ci-local/synapps-6.0.set
@@ -0,0 +1,6 @@
+SNCSEQ=R2-2-5
+SSCAN=R2-11-1
+CALC=R3-7-1
+IPAC=2.15
+
+BASE=3.15
diff --git a/.ci-local/synapps-6.3.set b/.ci-local/synapps-6.3.set
new file mode 100644
index 000000000..df467a05f
--- /dev/null
+++ b/.ci-local/synapps-6.3.set
@@ -0,0 +1,6 @@
+SNCSEQ=R2-2-9
+SSCAN=R2-11-5
+CALC=R3-7-4
+IPAC=2.16
+
+BASE=7.0
diff --git a/.github/workflows/ci-scripts-build.yml b/.github/workflows/ci-scripts-build.yml
new file mode 100644
index 000000000..6d4f3949b
--- /dev/null
+++ b/.github/workflows/ci-scripts-build.yml
@@ -0,0 +1,164 @@
+name: Build and Test
+
+# Trigger on pushes and PRs to any branch
+on:
+  push:
+    paths-ignore:
+      - 'documentation/*'
+      - '.gitattributes'
+      - '**/*.html'
+      - '**/*.md'
+      - '**/*.txt'
+  pull_request:
+    paths-ignore:
+      - 'documentation/*'
+      - '.gitattributes'
+      - '**/*.html'
+      - '**/*.md'
+      - '**/*.txt'
+  workflow_dispatch:
+
+env:
+  SETUP_PATH: .ci-local:.ci
+  BASE_RECURSIVE: NO
+  MODULES: "sncseq sscan calc ipac"
+  APT: re2c libtirpc-dev libreadline-dev
+  CHOCO: re2c
+  BREW: re2c
+
+jobs:
+  test:
+    name: ${{ matrix.name }}
+    runs-on: ${{ matrix.os }}
+    env:
+      CMP: ${{ matrix.cmp }}
+      BCFG: ${{ matrix.configuration }}
+      BASE: ${{ matrix.base }}
+      SET: ${{ matrix.deps }}
+      CI_CROSS_TARGETS: ${{ matrix.cross }}
+      TEST: ${{ matrix.test }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        # Job names also name artifacts, character limitations apply
+        include:
+          - name: Linux Base7.0
+            os: ubuntu-latest
+            cmp: gcc
+            configuration: default
+            base: "7.0"
+
+          - name: Linux Base7.0 static
+            os: ubuntu-latest
+            cmp: gcc
+            configuration: static
+            base: "7.0"
+
+          - name: Linux Base3.15
+            os: ubuntu-latest
+            cmp: gcc
+            configuration: default
+            base: "3.15"
+
+          - name: Linux Base3.15 static
+            os: ubuntu-latest
+            cmp: gcc
+            configuration: static
+            base: "3.15"
+
+          - name: Linux Base7.0 synapps-6.3
+            os: ubuntu-latest
+            cmp: gcc
+            configuration: default
+            deps: "synapps-6.3"
+
+          - name: Linux Base3.15 synapps-6.0
+            os: ubuntu-latest
+            cmp: gcc
+            configuration: default
+            deps: "synapps-6.0"
+
+          - name: Linux Base3.14 synapps-6.0
+            os: ubuntu-latest
+            cmp: gcc
+            configuration: default
+            base: "3.14"
+            deps: "synapps-6.0"
+
+          - name: Linux Base3.14 synapps-5.8
+            os: ubuntu-latest
+            cmp: gcc
+            configuration: default
+            deps: "synapps-5.8"
+
+          - name: Linux Base3.15 no-deps
+            os: ubuntu-latest
+            cmp: gcc
+            configuration: default
+            base: "3.15"
+
+          - name: MacOS Base7.0
+            os: macos-latest
+            cmp: clang
+            configuration: default
+
+          - name: Win2019 Base7.0 DLL
+            os: windows-2019
+            cmp: vs2019
+            configuration: default
+            base: "7.0"
+
+          - name: Win2019 Base7.0 static
+            os: windows-2019
+            cmp: vs2019
+            configuration: static
+            base: "7.0"
+
+          - name: RTEMS-4.9 Base7.0
+            os: ubuntu-latest
+            cmp: gcc
+            configuration: default
+            base: "7.0"
+            cross: "RTEMS-pc386-qemu@4.9"
+
+          - name: RTEMS-4.10 Base7.0
+            os: ubuntu-latest
+            cmp: gcc
+            configuration: default
+            base: "7.0"
+            cross: "RTEMS-pc386-qemu@4.10"
+            test: NO
+
+          - name: RTEMS-5 Base7.0
+            os: ubuntu-latest
+            cmp: gcc
+            configuration: default
+            base: "7.0"
+            cross: "RTEMS-pc686-qemu@5"
+
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        submodules: true
+
+    - name: Prepare and compile EPICS dependencies
+      run: python .ci/cue.py prepare
+
+    - name: Build main module
+      run: python .ci/cue.py build
+
+    - name: Run main module tests
+      run: python .ci/cue.py -T 20M test
+
+    - name: Upload tapfiles Artifact
+      if: ${{ always() }}
+      uses: actions/upload-artifact@v4
+      with:
+        name: tapfiles ${{ matrix.name }}
+        path: '**/O.*/*.tap'
+        if-no-files-found: ignore
+
+    - name: Collect and show test results
+      if: ${{ always() }}
+      run: python .ci/cue.py -T 5M test-results
diff --git a/.github/workflows/ci-scripts.yml b/.github/workflows/ci-scripts.yml
deleted file mode 100644
index fb4356dc1..000000000
--- a/.github/workflows/ci-scripts.yml
+++ /dev/null
@@ -1,130 +0,0 @@
-name: asyn
-
-# Trigger on pushes and PRs to any branch
-on:
-  push:
-    paths-ignore:
-      - '**/*.md'
-      - '**/*.txt'
-  pull_request:
-
-env:
-  SETUP_PATH: .ci-local:.ci
-
-jobs:
-  test:
-    name: ${{ matrix.os }}/${{ matrix.deps }}/${{ matrix.base }}/${{ matrix.cmp }}/${{ matrix.configuration }}/${{ matrix.cross }}
-    runs-on: ${{ matrix.os }}
-    env:
-      CMP: ${{ matrix.cmp }}
-      BCFG: ${{ matrix.configuration }}
-      BASE: ${{ matrix.base }}
-      SET: ${{ matrix.deps }}
-      CI_CROSS_TARGETS: ${{ matrix.cross }}
-      TEST: ${{ matrix.test }}
-      APT: re2c
-      CHOCO: re2c
-      BREW: re2c
-
-    strategy:
-      fail-fast: false
-      matrix:
-        # Job names also name artifacts, character limitations apply
-        include:
-          - os: ubuntu-latest
-            cmp: gcc
-            configuration: default
-            base: "7.0"
-            deps: "deps2"
-
-          - os: ubuntu-latest
-            cmp: gcc
-            configuration: static
-            base: "7.0"
-            deps: "deps2"
-
-          - os: ubuntu-latest
-            cmp: gcc
-            configuration: static
-            base: "7.0"
-            deps: "deps2"
-
-          - os: ubuntu-latest
-            cmp: gcc
-            configuration: default
-            base: "3.15"
-            deps: "no-deps"
-
-          - os: ubuntu-latest
-            cmp: gcc
-            configuration: static
-            base: "3.15"
-            deps: "deps2"
-
-#          - os: ubuntu-latest
-#            cmp: gcc
-#            configuration: static
-#            base: "3.14"
-#            deps: "deps1"
-
-          - os: windows-2019
-            cmp: vs2019
-            configuration: default
-            base: "7.0"
-            deps: "deps2"
-
-          - os: windows-2019
-            cmp: vs2019
-            configuration: static
-            base: "7.0"
-            deps: "deps2"
-
-          - os: ubuntu-latest
-            cmp: gcc
-            configuration: default
-            base: "7.0"
-            deps: "no-deps"
-            cross: "RTEMS-pc386-qemu@4.9"
-
-          - os: ubuntu-latest
-            cmp: gcc
-            configuration: default
-            base: "7.0"
-            deps: "no-deps"
-            cross: "RTEMS-pc386-qemu@4.10"
-            test: NO
-
-#          - os: ubuntu-latest
-#            cmp: gcc
-#            configuration: default
-#            base: "7.0"
-#            deps: "no-deps"
-#            cross: "RTEMS-pc686-qemu@5"
-    steps:
-    - uses: actions/checkout@v3
-      with:
-        submodules: true
-
-    - name: Prepare and compile EPICS dependencies
-      run: python .ci/cue.py prepare
-
-    - name: TIRPC
-      run: echo TIRPC=YES > configure/CONFIG_SITE.Common.linux-x86_64
-
-    - name: Build main module
-      run: python .ci/cue.py build
-
-    - name: Run main module tests
-      run: python .ci/cue.py -T 20M test
-
-    - name: Upload tapfiles Artifact
-      if: ${{ always() }}
-      uses: actions/upload-artifact@v3
-      with:
-        name: tapfiles ${{ matrix.name }}
-        path: '**/O.*/*.tap'
-        if-no-files-found: ignore
-
-    - name: Collect and show test results
-      if: ${{ always() }}
-      run: python .ci/cue.py -T 5M test-results
diff --git a/RELEASE.md b/RELEASE.md
index f56cd741a..3904fd559 100755
--- a/RELEASE.md
+++ b/RELEASE.md
@@ -1,5 +1,12 @@
 # asynDriver: Release Notes
 
+## Release 4-46 (XXX, 2025)
+- devVxi11
+  - Make VXI11 support (for VISA systems) optional.
+    VXI11 is broken on RTEMS-5 and rarely required for real-time system IOCs.
+    By default enabled via setting DRV_VXI11=YES in configure/CONFIG_SITE. (Except RTEMS-5.)
+  - Thanks to Heinz Junkes for this.
+
 ## Release 4-45 (December 1, 2024)
 - asynManager, asynPortDriver
   - Add support for destructable ports.  
diff --git a/asyn/Makefile b/asyn/Makefile
index 3f803f489..608900159 100644
--- a/asyn/Makefile
+++ b/asyn/Makefile
@@ -215,6 +215,7 @@ ifneq ($(EPICS_LIBCOM_ONLY),YES)
   DB += asynRecord.db
 endif
 
+ifeq ($(DRV_VXI11),YES)
 SRC_DIRS += $(ASYN)/vxi11
 ifeq ($(OS_CLASS), WIN32)
   asyn_SRCS += drvVxi11Win32.c
@@ -226,6 +227,7 @@ asyn_SRCS += E5810Reboot.c
 asyn_SRCS += E2050Reboot.c
 asyn_SRCS += TDS3000Reboot.c
 DBD += drvVxi11.dbd
+endif
 
 SRC_DIRS += $(ASYN)/drvPrologixGPIB
 asyn_SRCS += drvPrologixGPIB.c
@@ -242,9 +244,11 @@ endif
 
 ifneq (, $(findstring RTEMS, $(T_A)))
   DRV_USBTMC = NO
+  DRV_VXI11 = NO
 endif
 ifneq (, $(findstring vxWorks, $(T_A)))
   DRV_USBTMC = NO
+  DRV_VXI11 = NO
 endif
 ifeq ($(DRV_USBTMC),YES)
   SRC_DIRS += $(ASYN)/drvAsynUSBTMC
diff --git a/configure/CONFIG_SITE b/configure/CONFIG_SITE
index 538cd55ce..b6a3bec49 100644
--- a/configure/CONFIG_SITE
+++ b/configure/CONFIG_SITE
@@ -36,6 +36,9 @@ CHECK_RELEASE = YES
 # then set LINUX_GPIB=YES
 LINUX_GPIB=NO
 
+# If you have rpc-lib installed and want to have support for VISA devices (VXI11) set DRV_VXI11=YES
+#DRV_VXI11=YES
+
 # If you have libusb-1.0 revision 16 or newer and want the USB TMC support set DRV_USBTMC=YES
 #DRV_USBTMC=YES
 
diff --git a/configure/CONFIG_SITE.Common.linux-x86_64 b/configure/CONFIG_SITE.Common.linux-x86_64
index d500d713c..a7cbc8f41 100644
--- a/configure/CONFIG_SITE.Common.linux-x86_64
+++ b/configure/CONFIG_SITE.Common.linux-x86_64
@@ -4,6 +4,5 @@
 # If your system has libftdi1, set the following to YES. If it has libftdi, set it to NO
 #DRV_FTDI_USE_LIBFTDI1=YES
 
-# If your system has tirpc, set the following to YES.
+# If your system has tirpc (Linux does), set the following to YES.
 TIRPC=YES
-
diff --git a/configure/CONFIG_SITE.Common.linux-x86_64-centos8 b/configure/CONFIG_SITE.Common.linux-x86_64-centos8
deleted file mode 100644
index 28e1e7827..000000000
--- a/configure/CONFIG_SITE.Common.linux-x86_64-centos8
+++ /dev/null
@@ -1,2 +0,0 @@
-TIRPC=YES
-
diff --git a/configure/CONFIG_SITE.Common.linux-x86_64-ub22 b/configure/CONFIG_SITE.Common.linux-x86_64-ub22
deleted file mode 100644
index 28e1e7827..000000000
--- a/configure/CONFIG_SITE.Common.linux-x86_64-ub22
+++ /dev/null
@@ -1,2 +0,0 @@
-TIRPC=YES
-
diff --git a/testGpibApp/src/Makefile b/testGpibApp/src/Makefile
index 20957003d..27c13fdb6 100644
--- a/testGpibApp/src/Makefile
+++ b/testGpibApp/src/Makefile
@@ -10,7 +10,7 @@ ASYN_LIB = $(TOP)/lib/$(T_A)
 ASYN_BIN = $(TOP)/bin/$(T_A)
 
 USR_CFLAGS += -DUSE_TYPED_RSET -DUSE_TYPED_DSET -DUSE_TYPED_DRVET
-
+ifeq ($(DRV_VXI11),YES)
 DBD += devTestGpib.dbd
 
 DBD += testGpib.dbd
@@ -61,7 +61,7 @@ testGpibVx_LIBS += $(EPICS_BASE_IOC_LIBS)
 
 
 #===========================
-
+endif
 include $(TOP)/configure/RULES
 #----------------------------------------
 #  ADD RULES AFTER THIS LINE