diff --git a/tests/meson.build b/tests/meson.build
index 907a4c1c98..febbe02806 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -86,3 +86,4 @@ subdir('qapi-schema')
 subdir('qtest')
 subdir('migration')
 subdir('functional')
+subdir('xbox')
diff --git a/tests/xbox/dsp/data/Makefile b/tests/xbox/dsp/data/Makefile
new file mode 100644
index 0000000000..8bd271a422
--- /dev/null
+++ b/tests/xbox/dsp/data/Makefile
@@ -0,0 +1,4 @@
+all: basic
+
+%: %.a56
+	a56 -o $@ $<
diff --git a/tests/xbox/dsp/data/basic b/tests/xbox/dsp/data/basic
new file mode 100644
index 0000000000..7b11e507ea
--- /dev/null
+++ b/tests/xbox/dsp/data/basic
@@ -0,0 +1,12 @@
+P 0000 0C0040
+P 0040 0AF080
+P 0041 000042
+P 0042 56F400
+P 0043 123456
+P 0044 567000
+P 0045 000003
+P 0046 08F484
+P 0047 000001
+P 0048 0C0042
+I 000040 start
+I 000042 mainloop
diff --git a/tests/xbox/dsp/data/basic.a56 b/tests/xbox/dsp/data/basic.a56
new file mode 100644
index 0000000000..0be7483dba
--- /dev/null
+++ b/tests/xbox/dsp/data/basic.a56
@@ -0,0 +1,12 @@
+	org	p:$0000
+	jmp	<start
+
+	org	p:$40
+start
+	jmp	mainloop
+
+mainloop
+	move #$123456,A
+	move A,X:3
+	movep #$000001,x:$ffffc4
+	jmp	<mainloop
diff --git a/tests/xbox/dsp/meson.build b/tests/xbox/dsp/meson.build
new file mode 100644
index 0000000000..65b8f999ef
--- /dev/null
+++ b/tests/xbox/dsp/meson.build
@@ -0,0 +1,13 @@
+test_env = environment()
+test_env.set('G_TEST_SRCDIR', meson.current_source_dir())
+test_env.set('G_TEST_BUILDDIR', meson.current_build_dir())
+
+exe = executable('test-xbox-mcpx-dsp',
+                 sources: files('test-dsp.c'),
+                 dependencies: [qemuutil, dsp, glib])
+
+test('xbox-mcpx-dsp', exe,
+     env: test_env,
+     args: ['--tap', '-k'],
+     protocol: 'tap',
+     suite: ['xbox', 'xbox-mcpx', 'xbox-mcpx-dsp'])
diff --git a/tests/xbox/dsp/test-dsp.c b/tests/xbox/dsp/test-dsp.c
new file mode 100644
index 0000000000..456ec57088
--- /dev/null
+++ b/tests/xbox/dsp/test-dsp.c
@@ -0,0 +1,84 @@
+/*
+ * DSP tests.
+ *
+ * Copyright (c) 2025 Matt Borgerson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+#include "hw/xbox/mcpx/dsp/dsp.h"
+
+static void scratch_rw(void *opaque, uint8_t *ptr, uint32_t addr, size_t len, bool dir)
+{
+    assert(!"Not implemented");
+}
+
+static void fifo_rw(void *opaque, uint8_t *ptr, unsigned int index, size_t len, bool dir)
+{
+    assert(!"Not implemented");
+}
+
+static void load_prog(DSPState *s, const char *path)
+{
+    FILE *file = fopen(path, "r");
+    assert(file && "Error opening file");
+
+    char type, line[100], arg1[20], arg2[20];
+    int addr, value;
+
+    while (fgets(line, sizeof(line), file)) {
+        if (sscanf(line, "%c %s %s", &type, arg1, arg2) >= 2) {
+            switch (type) {
+                case 'P':
+                case 'X':
+                case 'Y': {
+                    assert(sscanf(arg1, "%x", &addr) == 1);
+                    assert(sscanf(arg2, "%x", &value) == 1);
+                    dsp_write_memory(s, type, addr, value);
+                    break;
+                }
+            }
+        } else {
+            printf("Invalid line: %s\n", line);
+            assert(0);
+        }
+    }
+
+    fclose(file);
+}
+
+static void test_dsp_basic(void)
+{
+    g_autofree gchar *path = g_test_build_filename(G_TEST_DIST, "data", "basic", NULL);
+
+    DSPState *s = dsp_init(NULL, scratch_rw, fifo_rw);
+
+    load_prog(s, path);
+    dsp_run(s, 1000);
+
+    uint32_t v = dsp_read_memory(s, 'X', 3);
+    g_assert_cmphex(v, ==, 0x123456);
+
+    dsp_destroy(s);
+}
+
+int main(int argc, char **argv)
+{
+    g_test_init(&argc, &argv, NULL);
+
+    g_test_add_func("/basic", test_dsp_basic);
+
+    return g_test_run();
+}
diff --git a/tests/xbox/meson.build b/tests/xbox/meson.build
new file mode 100644
index 0000000000..e836218210
--- /dev/null
+++ b/tests/xbox/meson.build
@@ -0,0 +1 @@
+subdir('dsp')