diff --git a/CONFIG.md b/CONFIG.md
index e0badbbf..5de6e5b2 100644
--- a/CONFIG.md
+++ b/CONFIG.md
@@ -113,6 +113,12 @@ Needs over 1000 bytes in KERNAL segment. If unsure - enable.
 
 Causes screen blanking during some IEC operations (currently only JiffyDOS file loading) to increase the data transfer performance.
 
+### `CONFIG_IEC_DOLPHINDOS`
+
+Adds support for DolphinDOS fast protocol to the IEC bus, using UserPort cable.
+
+Needs some space in KERNAL segment. If unsure - enable.
+
 ### `CONFIG_IEC_JIFFYDOS`
 
 Adds support for JiffyDOS fast protocol to the IEC bus.
diff --git a/STATUS.md b/STATUS.md
index 31ed9acc..be9e1b84 100644
--- a/STATUS.md
+++ b/STATUS.md
@@ -61,7 +61,7 @@ The following ROM features are currently missing:
 | :-----------: | :------: | :------------------------------------------------: |
 | standard      | DONE     |                                                    |
 | JiffyDOS      | DONE     |                                                    |
-| DolphinDOS    | NOT DONE |                                                    |
+| DolphinDOS    | PARTIAL  | for now only LOAD is accelerated                   |
 | CIA burst mod | NOT DONE |                                                    |
 
 ## RS-232
diff --git a/bin/basic_generic.rom b/bin/basic_generic.rom
index 67d6d761..a9606597 100644
Binary files a/bin/basic_generic.rom and b/bin/basic_generic.rom differ
diff --git a/bin/basic_testing.rom b/bin/basic_testing.rom
index 30d6963d..5bba5411 100644
Binary files a/bin/basic_testing.rom and b/bin/basic_testing.rom differ
diff --git a/bin/basic_ultimate64.rom b/bin/basic_ultimate64.rom
index 3e91cd62..2c786995 100644
Binary files a/bin/basic_ultimate64.rom and b/bin/basic_ultimate64.rom differ
diff --git a/bin/kernal_generic.rom b/bin/kernal_generic.rom
index 2a5d2dae..8f5cddb3 100644
Binary files a/bin/kernal_generic.rom and b/bin/kernal_generic.rom differ
diff --git a/bin/kernal_testing.rom b/bin/kernal_testing.rom
index 4ee9d0c3..34730d2b 100644
Binary files a/bin/kernal_testing.rom and b/bin/kernal_testing.rom differ
diff --git a/bin/kernal_ultimate64.rom b/bin/kernal_ultimate64.rom
index 0851f524..6e0565b3 100644
Binary files a/bin/kernal_ultimate64.rom and b/bin/kernal_ultimate64.rom differ
diff --git a/bin/mega65.rom b/bin/mega65.rom
index 495d1f41..404a994e 100644
Binary files a/bin/mega65.rom and b/bin/mega65.rom differ
diff --git a/c64/,,config_custom.s b/c64/,,config_custom.s
index 3ab327ae..c6eb3fa8 100644
--- a/c64/,,config_custom.s
+++ b/c64/,,config_custom.s
@@ -46,7 +46,7 @@
 
 #define CONFIG_IEC
 #define CONFIG_IEC_BLANK_SCREEN
-#define CONFIG_IEC_DOLPHINDOS     // not finished yet
+#define CONFIG_IEC_DOLPHINDOS     // not finished yet, but LOAD works
 #define CONFIG_IEC_JIFFYDOS
 
 #define CONFIG_TAPE_NORMAL
diff --git a/c64/,,config_generic.s b/c64/,,config_generic.s
index 8049f2c2..b2a02c59 100644
--- a/c64/,,config_generic.s
+++ b/c64/,,config_generic.s
@@ -43,6 +43,7 @@
 
 #define CONFIG_IEC
 #define CONFIG_IEC_BLANK_SCREEN
+#define CONFIG_IEC_DOLPHINDOS
 #define CONFIG_IEC_JIFFYDOS
 
 #define CONFIG_TAPE_NORMAL
diff --git a/c64/,,config_testing.s b/c64/,,config_testing.s
index 2134a928..07823cc3 100644
--- a/c64/,,config_testing.s
+++ b/c64/,,config_testing.s
@@ -43,6 +43,7 @@
 
 #define CONFIG_IEC
 // #define CONFIG_IEC_BLANK_SCREEN
+#define CONFIG_IEC_DOLPHINDOS
 #define CONFIG_IEC_JIFFYDOS
 
 // #define CONFIG_TAPE_NORMAL
diff --git a/c64/,,config_ultimate64.s b/c64/,,config_ultimate64.s
index 4295ccdd..5a0e5923 100644
--- a/c64/,,config_ultimate64.s
+++ b/c64/,,config_ultimate64.s
@@ -43,6 +43,7 @@
 
 #define CONFIG_IEC
 #define CONFIG_IEC_BLANK_SCREEN
+#define CONFIG_IEC_DOLPHINDOS
 #define CONFIG_IEC_JIFFYDOS
 
 #define CONFIG_TAPE_NORMAL
diff --git a/c64/kernal/iec/load_iec.s b/c64/kernal/iec/load_iec.s
index 92c983a1..cf5e5995 100644
--- a/c64/kernal/iec/load_iec.s
+++ b/c64/kernal/iec/load_iec.s
@@ -107,9 +107,8 @@ load_iec:
 #endif
 
 #if CONFIG_IEC_DOLPHINDOS
-	// XXX enable when finished
-	// cmp #$02
-	// beq_far load_dolphindos            // branch if JiffyDOS
+	cmp #$02
+	beq_far load_dolphindos            // branch if DolphinDOS
 #endif
 
 #endif
diff --git a/c64/kernal/iec_fast/dolphindos_detect.s b/c64/kernal/iec_fast/dolphindos_detect.s
index b8cb278d..dbdafab7 100644
--- a/c64/kernal/iec_fast/dolphindos_detect.s
+++ b/c64/kernal/iec_fast/dolphindos_detect.s
@@ -54,8 +54,6 @@ dolphindos_detect_loop:
 
 dolphindos_detect_fail:
 
-	panic #$00
-
 	rts
 
 dolphindos_detect_success:
diff --git a/c64/kernal/iec_fast/load_dolphindos.s b/c64/kernal/iec_fast/load_dolphindos.s
index a80eba8e..27258a14 100644
--- a/c64/kernal/iec_fast/load_dolphindos.s
+++ b/c64/kernal/iec_fast/load_dolphindos.s
@@ -19,9 +19,60 @@ load_dolphindos:
 
 load_dolphindos_loop:
 
+	// Check if this was EOI
+	lda IOSTATUS
+	and #K_STS_EOI
+	bne load_dolphindos_end
 
+	// Wait for the talker to release the CLK line
+!:
+	bit CIA2_PRA
+	bvc !-
 
-	panic #$00 // XXX this routine is not finished yet
+	// Release the DATA to signal we are ready
+	lda CIA2_PRA
+	and #$FF - BIT_CIA2_PRA_DAT_OUT    // release
+	sta CIA2_PRA
+
+	// Wait till data line is released (someone else might be holding it)
+!:
+	lda CIA2_PRA
+	bpl !-
+
+	// Check if EOI - routine can damage .Y, so store it in safe place
+	sty TBTCNT
+	jsr iec_rx_check_eoi
+	ldy TBTCNT
+
+	// Retrieve and store byte
+	lda CIA2_PRB
+	iny
+	sta (EAL),y
+
+	// Pull DATA to acknowledge
+	lda CIA2_PRA
+	ora #BIT_CIA2_PRA_DAT_OUT
+	sta CIA2_PRA
+
+	// Handle EAL
+	cpy #$FF
+	bne load_dolphindos_loop
+	inc EAL+1
+	jmp load_dolphindos_loop
+
+load_dolphindos_end:
+
+	// Update EAL - XXX deduplicate with JiffyDOS counterpart
+	tya
+	sec
+	adc EAL+0
+	sta EAL+0
+	bcc !+
+	inc EAL+1
+!:
+
+	// End of load loop
+	jmp load_iec_loop_end
 
 
 #endif // CONFIG_IEC_DOLPHINDOS and not CONFIG_MEMORY_MODEL_60K