diff --git a/.forgejo/workflows/run-test-asserts.yaml b/.forgejo/workflows/run-test-asserts.yaml
index 49b70e5..3c4073d 100644
--- a/.forgejo/workflows/run-test-asserts.yaml
+++ b/.forgejo/workflows/run-test-asserts.yaml
@@ -11,4 +11,4 @@ jobs:
       - name: Check out
         uses: actions/checkout@v3
       - name: Run asserts
-        run: PATH_HEX2BIN=/opt/Hex2bin-2.5 make assert-all;
+        run: make assert-all;
diff --git a/README.md b/README.md
index 5605ac1..7c1f077 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,6 @@ The files in this repro try to handle these steps for you.
 * make
 * openmsx
 * sdcc
-* hex2bin-2.5 (see [https://hex2bin.sourceforge.net/](https://hex2bin.sourceforge.net/))
 * wget
 * unix2dos
 
@@ -45,12 +44,11 @@ For debian use;
 Include the `lib/make/msxbuild.mk` file from your Makefile.
 And override the required paths;
 * PATH_SDCC       ?= /usr/bin
-* PATH_HEX2BIN    ?= /usr/bin
 * PATH_UNIX2DOS   ?= /usr/bin
 * PATH_OPENMSX    ?= /opt/openMSX/bin/
 * PATH_MSXBUILD   ?= /opt/msxbuild
 
-Then build result based compile rules see an example in; `test/ahello/0module.mk`
+Then build result based compile rules see an example in; `test/ahello-m80/0module.mk`
 
 
 ## Functions
@@ -67,8 +65,7 @@ Current set is WIP.
 * mb_link_asm_8000
 * mb_link_asm_C000
 * mb_link_asm_dos = alias for mb_link_asm_0100
-* mb_hex2com
-* mb_hex2dat
+* mb_hex2bin
 * mb_openmsx_dosctl
 * mb_msxhub_file
 * mb_package_dos1
diff --git a/lib/make/mb_build.mk b/lib/make/mb_build.mk
index 988eaaf..0c0a5f5 100644
--- a/lib/make/mb_build.mk
+++ b/lib/make/mb_build.mk
@@ -1,14 +1,14 @@
 
-MB_BUILD_FLAG_CPU     ?= -mz80
-MB_BUILD_FLAG_LD      ?= --nostdinc
-MB_BUILD_SDASM_FLAGS  ?= -g -l -c -o
-MB_BUILD_SDCC_FLAGS   ?=
-MB_BUILD_SDAR_FLAGS   ?= -rc
-MB_BUILD_H2B_CMD      ?= $(PATH_HEX2BIN)/hex2bin
-MB_BUILD_SDCC_CMD     ?= $(PATH_SDCC)/sdcc
-MB_BUILD_SDASM_CMD    ?= $(PATH_SDCC)/sdasz80
-MB_BUILD_SDAR_CMD     ?= $(PATH_SDCC)/sdar
-MB_BUILD_UNIX2DOS_CMD ?= $(PATH_UNIX2DOS)/unix2dos
+MB_BUILD_FLAG_CPU      ?= -mz80
+MB_BUILD_FLAG_LD       ?= --nostdinc
+MB_BUILD_SDASM_FLAGS   ?= -g -l -c -o
+MB_BUILD_SDCC_FLAGS    ?=
+MB_BUILD_SDAR_FLAGS    ?= -rc
+MB_BUILD_SDCC_CMD      ?= $(PATH_SDCC)/sdcc
+MB_BUILD_SDASM_CMD     ?= $(PATH_SDCC)/sdasz80
+MB_BUILD_SDAR_CMD      ?= $(PATH_SDCC)/sdar
+MB_BUILD_SDOBJCOPY_CMD ?= $(PATH_SDCC)/sdobjcopy
+MB_BUILD_UNIX2DOS_CMD  ?= $(PATH_UNIX2DOS)/unix2dos
 
 # TODO: Add C + mixed support;
 #$(MB_SDASM) -I$(MB_LIBASM_SRC)/include
@@ -54,11 +54,6 @@ define mb_link_asm_dos
 	$(call mb_link_asm_0100,$(1),$(2))
 endef
 
-define mb_hex2com
-	@echo === Extracting hex2com
-	cd $(dir $(1)) && $(MB_BUILD_H2B_CMD) -e com $(notdir $(1))
-endef
-define mb_hex2dat
-	@echo === Extracting hex2dat
-	cd $(dir $(1)) && $(MB_BUILD_H2B_CMD) -e dat $(notdir $(1))
+define mb_hex2bin
+	$(MB_BUILD_SDOBJCOPY_CMD) -I ihex --output-target=binary $(1) $(2)
 endef
diff --git a/lib/make/msxbuild.mk b/lib/make/msxbuild.mk
index b8fb5e3..6022f7b 100644
--- a/lib/make/msxbuild.mk
+++ b/lib/make/msxbuild.mk
@@ -3,7 +3,6 @@
 #
 
 # Setup required tools paths
-PATH_HEX2BIN       ?= /usr/bin
 PATH_SDCC          ?= /usr/bin
 PATH_UNIX2DOS      ?= /usr/bin
 PATH_OPENMSX       ?= /usr/bin
diff --git a/test/ahello-sdcc/0module.mk b/test/ahello-sdcc/0module.mk
index 2c8953a..6223a69 100644
--- a/test/ahello-sdcc/0module.mk
+++ b/test/ahello-sdcc/0module.mk
@@ -14,7 +14,7 @@ $(TEST_AHELLO_SDCC)/ahello.hex: $(TEST_AHELLO_SDCC)/ahello.rel
 	$(call mb_link_asm_dos,$(TEST_AHELLO_SDCC)/ahello.hex,$(TEST_AHELLO_SDCC)/ahello.rel)
 
 $(TEST_AHELLO_SDCC)/ahello.com: $(TEST_AHELLO_SDCC)/ahello.hex
-	$(call mb_hex2com,$(TEST_AHELLO_SDCC)/ahello.hex,$(TEST_AHELLO_SDCC)/ahello.com)
+	$(call mb_hex2bin,$(TEST_AHELLO_SDCC)/ahello.hex,$(TEST_AHELLO_SDCC)/ahello.com)
 
 .PHONY: test-ahello-sdcc-run
 test-ahello-sdcc-run: $(TEST_AHELLO_SDCC)/ahello.com