diff --git a/src/board/system76/galp3-c/pmc.c b/src/board/system76/galp3-c/pmc.c
index 8710fda..bfbf490 100644
--- a/src/board/system76/galp3-c/pmc.c
+++ b/src/board/system76/galp3-c/pmc.c
@@ -37,71 +37,78 @@ void pmc_event(struct Pmc * pmc) {
     static enum PmcState state = PMC_STATE_DEFAULT;
     static uint8_t state_data[2] = {0, 0};
 
-    uint8_t sts = pmc_status(pmc);
-    if (sts & PMC_STS_IBF) {
-        uint8_t data = pmc_read(pmc);
-        if (sts & PMC_STS_CMD) {
-            DEBUG("pmc cmd: %02X\n", data);
+    uint16_t burst_timeout;
+    for (burst_timeout = 1; burst_timeout > 0; burst_timeout--) {
+        uint8_t sts = pmc_status(pmc);
+        if (sts & PMC_STS_IBF) {
+            uint8_t data = pmc_read(pmc);
+            if (sts & PMC_STS_CMD) {
+                DEBUG("pmc cmd: %02X\n", data);
 
-            state = PMC_STATE_DEFAULT;
-            switch (data) {
-            case 0x80:
-                state = PMC_STATE_ACPI_READ;
-                break;
-            case 0x81:
-                state = PMC_STATE_ACPI_WRITE;
-                break;
-            case 0x82:
-                DEBUG("  burst enable\n");
-                // Set burst bit
-                pmc_set_status(pmc, sts | (1 << 4));
-                // Send acknowledgement byte
-                pmc_write(pmc, 0x90, PMC_TIMEOUT);
-                break;
-            case 0x83:
-                DEBUG("  burst disable\n");
-                // Clear burst bit
-                pmc_set_status(pmc, sts & ~(1 << 4));
-                break;
-            case 0x84:
-                DEBUG("  SCI queue\n");
-                // Clear SCI pending bit
-                pmc_set_status(pmc, sts & ~(1 << 5));
-                // Send SCI queue
-                pmc_write(pmc, pmc_sci_queue, PMC_TIMEOUT);
-                // Stop SCI interrupt
-                *(SCI_N.control) = 0x80;
-                gpio_set(&SCI_N, true);
-                // Clear SCI queue
-                pmc_sci_queue = 0;
-                break;
+                state = PMC_STATE_DEFAULT;
+                switch (data) {
+                case 0x80:
+                    state = PMC_STATE_ACPI_READ;
+                    break;
+                case 0x81:
+                    state = PMC_STATE_ACPI_WRITE;
+                    break;
+                case 0x82:
+                    DEBUG("  burst enable\n");
+                    // Run pmc_event in a tight loop for PMC_TIMEOUT iterations
+                    burst_timeout = PMC_TIMEOUT;
+                    // Set burst bit
+                    pmc_set_status(pmc, sts | (1 << 4));
+                    // Send acknowledgement byte
+                    pmc_write(pmc, 0x90, PMC_TIMEOUT);
+                    break;
+                case 0x83:
+                    DEBUG("  burst disable\n");
+                    // Exit pmc_event tight loop
+                    burst_timeout = 0;
+                    // Clear burst bit
+                    pmc_set_status(pmc, sts & ~(1 << 4));
+                    break;
+                case 0x84:
+                    DEBUG("  SCI queue\n");
+                    // Clear SCI pending bit
+                    pmc_set_status(pmc, sts & ~(1 << 5));
+                    // Send SCI queue
+                    pmc_write(pmc, pmc_sci_queue, PMC_TIMEOUT);
+                    // Stop SCI interrupt
+                    *(SCI_N.control) = 0x80;
+                    gpio_set(&SCI_N, true);
+                    // Clear SCI queue
+                    pmc_sci_queue = 0;
+                    break;
 
-            case 0xEC:
-                DEBUG("  scratch rom\n");
-                pmc_write(pmc, 0x76, PMC_TIMEOUT);
-                scratch_trampoline();
-                break;
-            }
-        } else {
-            DEBUG("pmc data: %02X\n", data);
+                case 0xEC:
+                    DEBUG("  scratch rom\n");
+                    pmc_write(pmc, 0x76, PMC_TIMEOUT);
+                    scratch_trampoline();
+                    break;
+                }
+            } else {
+                DEBUG("pmc data: %02X\n", data);
 
-            switch (state) {
-            case PMC_STATE_ACPI_READ:
-                state = PMC_STATE_DEFAULT;
-                uint8_t value = acpi_read(data);
-                pmc_write(pmc, value, PMC_TIMEOUT);
-                break;
-            case PMC_STATE_ACPI_WRITE:
-                state = PMC_STATE_ACPI_WRITE_ADDR;
-                state_data[0] = data;
-                break;
-            case PMC_STATE_ACPI_WRITE_ADDR:
-                state = PMC_STATE_DEFAULT;
-                acpi_write(state_data[0], data);
-                break;
-            default:
-                state = PMC_STATE_DEFAULT;
-                break;
+                switch (state) {
+                case PMC_STATE_ACPI_READ:
+                    state = PMC_STATE_DEFAULT;
+                    uint8_t value = acpi_read(data);
+                    pmc_write(pmc, value, PMC_TIMEOUT);
+                    break;
+                case PMC_STATE_ACPI_WRITE:
+                    state = PMC_STATE_ACPI_WRITE_ADDR;
+                    state_data[0] = data;
+                    break;
+                case PMC_STATE_ACPI_WRITE_ADDR:
+                    state = PMC_STATE_DEFAULT;
+                    acpi_write(state_data[0], data);
+                    break;
+                default:
+                    state = PMC_STATE_DEFAULT;
+                    break;
+                }
             }
         }
     }