diff --git a/devices/video/atimach64gx.cpp b/devices/video/atimach64gx.cpp
index bd21f30..862879c 100644
--- a/devices/video/atimach64gx.cpp
+++ b/devices/video/atimach64gx.cpp
@@ -35,6 +35,94 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 #include <string>
 
+/* Human readable Mach64 HW register names for easier debugging. */
+static const std::map<uint16_t, std::string> mach64_reg_names = {
+    #define one_reg_name(x) {ATI_ ## x, #x}
+    one_reg_name(CRTC_H_TOTAL_DISP),
+    one_reg_name(CRTC_H_SYNC_STRT_WID),
+    one_reg_name(CRTC_V_TOTAL_DISP),
+    one_reg_name(CRTC_V_SYNC_STRT_WID),
+    one_reg_name(CRTC_VLINE_CRNT_VLINE),
+    one_reg_name(CRTC_OFF_PITCH),
+    one_reg_name(CRTC_INT_CNTL),
+    one_reg_name(CRTC_GEN_CNTL),
+    one_reg_name(DSP_CONFIG),
+    one_reg_name(DSP_ON_OFF),
+    one_reg_name(MEM_BUF_CNTL),
+    one_reg_name(MEM_ADDR_CFG),
+    one_reg_name(OVR_CLR),
+    one_reg_name(OVR_WID_LEFT_RIGHT),
+    one_reg_name(OVR_WID_TOP_BOTTOM),
+    one_reg_name(CUR_CLR0),
+    one_reg_name(CUR_CLR1),
+    one_reg_name(CUR_OFFSET),
+    one_reg_name(CUR_HORZ_VERT_POSN),
+    one_reg_name(CUR_HORZ_VERT_OFF),
+    one_reg_name(GP_IO),
+    one_reg_name(HW_DEBUG),
+    one_reg_name(SCRATCH_REG0),
+    one_reg_name(SCRATCH_REG1),
+    one_reg_name(SCRATCH_REG2),
+    one_reg_name(SCRATCH_REG3),
+    one_reg_name(CLOCK_CNTL),
+    one_reg_name(BUS_CNTL),
+    one_reg_name(EXT_MEM_CNTL),
+    one_reg_name(MEM_CNTL),
+    one_reg_name(DAC_REGS),
+    one_reg_name(DAC_CNTL),
+    one_reg_name(GEN_TEST_CNTL),
+    one_reg_name(CUSTOM_MACRO_CNTL),
+    one_reg_name(CONFIG_CNTL),
+    one_reg_name(CONFIG_CHIP_ID),
+    one_reg_name(CONFIG_STAT0),
+    one_reg_name(DST_OFF_PITCH),
+    one_reg_name(DST_X),
+    one_reg_name(DST_Y),
+    one_reg_name(DST_WIDTH),
+    one_reg_name(DST_HEIGHT),
+    one_reg_name(SRC_CNTL),
+    one_reg_name(SCALE_3D_CNTL),
+    one_reg_name(PAT_REG0),
+    one_reg_name(PAT_REG1),
+    one_reg_name(SC_LEFT),
+    one_reg_name(SC_RIGHT),
+    one_reg_name(SC_TOP),
+    one_reg_name(SC_BOTTOM),
+    one_reg_name(DP_BKGD_CLR),
+    one_reg_name(DP_FRGD_CLR), // also DP_FOG_CLR for GT
+    one_reg_name(DP_WRITE_MSK),
+    one_reg_name(DP_PIX_WIDTH),
+    one_reg_name(DP_MIX),
+    one_reg_name(DP_SRC),
+    one_reg_name(CLR_CMP_CNTL),
+    one_reg_name(FIFO_STAT),
+    one_reg_name(GUI_TRAJ_CNTL),
+    one_reg_name(GUI_STAT),
+    one_reg_name(MPP_CONFIG),
+    one_reg_name(MPP_STROBE_SEQ),
+    one_reg_name(MPP_ADDR),
+    one_reg_name(MPP_DATA),
+    one_reg_name(TVO_CNTL),
+    one_reg_name(SETUP_CNTL),
+    #undef one_reg_name
+};
+
+static const std::map<uint16_t, std::string> rgb514_reg_names = {
+    #define one_reg_name(x) {Rgb514::x, #x}
+    one_reg_name(MISC_CLK_CNTL),
+    one_reg_name(HOR_SYNC_POS),
+    one_reg_name(PWR_MNMGMT),
+    one_reg_name(PIX_FORMAT),
+    one_reg_name(PLL_CTL_1),
+    one_reg_name(F0_M0),
+    one_reg_name(F1_N0),
+    one_reg_name(MISC_CNTL_1),
+    one_reg_name(MISC_CNTL_2),
+    one_reg_name(VRAM_MASK_LO),
+    one_reg_name(VRAM_MASK_HI),
+    #undef one_reg_name
+};
+
 AtiMach64Gx::AtiMach64Gx()
     : PCIDevice("ati-mach64-gx"), VideoCtrlBase(1024, 768)
 {
@@ -188,6 +276,15 @@ bool AtiMach64Gx::pci_io_write(uint32_t offset, uint32_t value, uint32_t size)
     return true;
 }
 
+const char* AtiMach64Gx::get_reg_name(uint32_t reg_num) {
+    auto iter = mach64_reg_names.find(reg_num);
+    if (iter != mach64_reg_names.end()) {
+        return iter->second.c_str();
+    } else {
+        return "unknown Mach64 register";
+    }
+}
+
 uint32_t AtiMach64Gx::read_reg(uint32_t reg_offset, uint32_t size)
 {
     uint32_t offset = reg_offset & 3;
@@ -383,6 +480,16 @@ void AtiMach64Gx::rgb514_write_reg(uint8_t reg_addr, uint8_t value)
     }
 }
 
+const char* AtiMach64Gx::rgb514_get_reg_name(uint32_t reg_addr)
+{
+    auto iter = rgb514_reg_names.find(reg_addr);
+    if (iter != rgb514_reg_names.end()) {
+        return iter->second.c_str();
+    } else {
+        return "unknown rgb514 register";
+    }
+}
+
 void AtiMach64Gx::rgb514_write_ind_reg(uint8_t reg_addr, uint8_t value)
 {
     this->dac_regs[reg_addr] = value;
diff --git a/devices/video/atimach64gx.h b/devices/video/atimach64gx.h
index 2f2795a..2a44cf3 100644
--- a/devices/video/atimach64gx.h
+++ b/devices/video/atimach64gx.h
@@ -1,6 +1,6 @@
 /*
 DingusPPC - The Experimental PowerPC Macintosh emulator
-Copyright (C) 2018-23 divingkatae and maximum
+Copyright (C) 2018-24 divingkatae and maximum
                       (theweirdo)     spatium
 
 (Contact divingkatae#1017 or powermax#2286 on Discord for more info)
@@ -55,6 +55,8 @@ public:
 
 protected:
     void notify_bar_change(int bar_num);
+    const char* get_reg_name(uint32_t reg_offset);
+    const char* rgb514_get_reg_name(uint32_t reg_offset);
     uint32_t read_reg(uint32_t reg_offset, uint32_t size);
     void write_reg(uint32_t reg_offset, uint32_t value, uint32_t size);
     void enable_crtc_internal();