diff --git a/sys/pic32/32mxsdram-uart/32mxsdram-schematics.pdf b/sys/pic32/32mxsdram-uart/32mxsdram-schematics.pdf
new file mode 100644
index 0000000..57a37d5
Binary files /dev/null and b/sys/pic32/32mxsdram-uart/32mxsdram-schematics.pdf differ
diff --git a/sys/pic32/Makefile b/sys/pic32/Makefile
index e0f9f93..18049c8 100644
--- a/sys/pic32/Makefile
+++ b/sys/pic32/Makefile
@@ -1,11 +1,9 @@
 
 # Programs that live in subdirectories, and have makefiles of their own.
 #
-SUBDIR		= baremetal duinomite duinomite-emega \
-                  explorer16 max32 maximite \
-                  meb starter-kit sdxl ubw32 ubw32-uart \
-                  ubw32-uart-sdram baremetal fubarino mmb-mx7 maximite-color \
-                  32mxsdram-uart picadillo wf32 pinguino-micro
+SUBDIR		= baremetal duinomite duinomite-emega explorer16 \
+                  fubarino max32 maximite maximite-color meb mmb-mx7 \
+                  picadillo pinguino-micro sdxl starter-kit ubw32 wf32
 
 default:
 
diff --git a/sys/pic32/picadillo/Makefile b/sys/pic32/picadillo/Makefile-old
similarity index 100%
rename from sys/pic32/picadillo/Makefile
rename to sys/pic32/picadillo/Makefile-old
diff --git a/sys/pic32/picadillo_rambo/Makefile b/sys/pic32/picadillo/Makefile-rambo-old
similarity index 77%
rename from sys/pic32/picadillo_rambo/Makefile
rename to sys/pic32/picadillo/Makefile-rambo-old
index a37cfa6..17c6479 100644
--- a/sys/pic32/picadillo_rambo/Makefile
+++ b/sys/pic32/picadillo/Makefile-rambo-old
@@ -18,30 +18,6 @@ DEFS += -DCPU_KHZ=80000
 DEFS += -DCPU_MUL=20
 DEFS += -DCPU_ODIV=1
 DEFS += -DCRYSTAL=8
-DEFS += -DDC0_DEBUG=DEVCFG0_DEBUG_DISABLED
-DEFS += -DDC0_ICE=0
-DEFS += -DDC1_CKM=0
-DEFS += -DDC1_CKS=0
-DEFS += -DDC1_FNOSC=DEVCFG1_FNOSC_PRIPLL
-DEFS += -DDC1_IESO=DEVCFG1_IESO
-DEFS += -DDC1_OSCIOFNC=0
-DEFS += -DDC1_PBDIV=DEVCFG1_FPBDIV_1
-DEFS += -DDC1_POSCMOD=DEVCFG1_POSCMOD_HS
-DEFS += -DDC1_SOSC=0
-DEFS += -DDC1_WDTEN=0
-DEFS += -DDC1_WDTPS=DEVCFG1_WDTPS_1
-DEFS += -DDC2_PLLIDIV=DEVCFG2_FPLLIDIV_2
-DEFS += -DDC2_PLLMUL=DEVCFG2_FPLLMUL_20
-DEFS += -DDC2_PLLODIV=DEVCFG2_FPLLODIV_1
-DEFS += -DDC2_UPLL=0
-DEFS += -DDC2_UPLLIDIV=DEVCFG2_UPLLIDIV_2
-DEFS += -DDC3_CAN=DEVCFG3_FCANIO
-DEFS += -DDC3_ETH=DEVCFG3_FETHIO
-DEFS += -DDC3_MII=DEVCFG3_FMIIEN
-DEFS += -DDC3_SRS=DEVCFG3_FSRSSEL_7
-DEFS += -DDC3_USBID=DEVCFG3_FUSBIDIO
-DEFS += -DDC3_USERID=0xffff
-DEFS += -DDC3_VBUSON=DEVCFG3_FVBUSONIO
 DEFS += -DEXEC_AOUT
 DEFS += -DEXEC_ELF
 DEFS += -DEXEC_SCRIPT
@@ -96,7 +72,7 @@ DEFS += -DUCB_METER
 
 LDSCRIPT = ../../../tools/configsys/../../sys/pic32/cfg/bootloader-max32.ld
 
-CONFIG = PICADILLO_RAMBO
+CONFIG = PICADILLO-RAMBO
 CONFIGPATH = ../../../tools/configsys
 
 include ../../../tools/configsys/../../sys/pic32/kernel-post.mk
diff --git a/sys/pic32/picadillo/PICADILLO b/sys/pic32/picadillo/PICADILLO
index 5fd32a7..e036a10 100644
--- a/sys/pic32/picadillo/PICADILLO
+++ b/sys/pic32/picadillo/PICADILLO
@@ -2,8 +2,8 @@
 # Picadillo 35T board
 # ===================
 #
-# Console on UART1
-# SD/MMC card driver on SPI2
+# Console on UART1.
+# SD/MMC card driver on SPI2.
 
 core pic32mx7
 mapping picadillo
diff --git a/sys/pic32/picadillo_rambo/PICADILLO_RAMBO b/sys/pic32/picadillo/PICADILLO-RAMBO
similarity index 86%
rename from sys/pic32/picadillo_rambo/PICADILLO_RAMBO
rename to sys/pic32/picadillo/PICADILLO-RAMBO
index 9e8dd20..66ddc86 100644
--- a/sys/pic32/picadillo_rambo/PICADILLO_RAMBO
+++ b/sys/pic32/picadillo/PICADILLO-RAMBO
@@ -1,6 +1,10 @@
 #
 # Picadillo 35T board
 # ===================
+#
+# Console on TFT display.
+# SD/MMC card driver on SPI2.
+# SPI RAM on SPI4.
 
 core pic32mx7
 mapping picadillo
diff --git a/sys/pic32/picadillo_rambo/.gitignore b/sys/pic32/picadillo_rambo/.gitignore
deleted file mode 100644
index 6a22af6..0000000
--- a/sys/pic32/picadillo_rambo/.gitignore
+++ /dev/null
@@ -1,9 +0,0 @@
-.compileversion
-.deps/
-.oldversion
-machine
-sys
-unix.bin
-unix.map
-usbboot.map
-vers.c
diff --git a/sys/pic32/retroone/Makefile b/sys/pic32/retroone/Makefile
index c08ebdd..c97605e 100644
--- a/sys/pic32/retroone/Makefile
+++ b/sys/pic32/retroone/Makefile
@@ -9,7 +9,7 @@ vpath %.c $(M):$(S)
 vpath %.S $(M):$(S)
 
 # Kernel options.
-DEFS		+= -I. -I$(H) -DKERNEL -DUCB_METER -DPIC32MX7
+DEFS		+= -I. -I$(H) -DKERNEL -DPIC32MX7
 DEFS		+= -DGLOBAL_DEBUG
 
 # CPU frequency 80 MHz.
@@ -38,13 +38,16 @@ ASFLAGS		= $(DEFS) $(DEPFLAGS)
 
 include ../gcc-config.mk
 
-CC		= $(GCCPREFIX)gcc -EL -g -mips32r2
+CC		= $(MIPS_GCC_PREFIX)gcc -EL -g -mips32r2
 CC		+= -nostdinc -fno-builtin -Werror -Wall -fno-dwarf2-cfi-asm
-LDFLAGS         += -nostdlib -T ../cfg/bare.ld -Wl,-Map=unix.map
-SIZE		= $(GCCPREFIX)size
-OBJDUMP		= $(GCCPREFIX)objdump
-OBJCOPY		= $(GCCPREFIX)objcopy
-MPIDE           = /Applications/Mpide.app/Contents/Resources/Java/
+LDFLAGS         = -nostdlib -T ../cfg/bare.ld -Wl,-Map=unix.map
+SIZE		= $(MIPS_GCC_PREFIX)size
+OBJDUMP		= $(MIPS_GCC_PREFIX)objdump
+OBJCOPY		= $(MIPS_GCC_PREFIX)objcopy
+
+ifneq (${MIPS_GCC_FORMAT},)
+    LDFLAGS     += -Wl,--oformat=${MIPS_GCC_FORMAT}
+endif
 
 # Machine-dependent files:
 # startup.o MUST be loaded first.
@@ -60,6 +63,7 @@ KERNOBJ		+= init_main.o init_sysent.o kern_clock.o \
 		   subr_log.o subr_prf.o subr_rmap.o \
 		   sys_generic.o sys_inode.o syscalls.o \
 		   sys_pipe.o sys_process.o tty.o exec_conf.o exec_subr.o \
+		   exec_aout.o exec_elf.o exec_script.o \
 		   tty_subr.o tty_tty.o ufs_alloc.o ufs_bio.o \
 		   ufs_bmap.o ufs_dsort.o ufs_fio.o \
 		   ufs_inode.o ufs_mount.o ufs_namei.o ufs_subr.o \
@@ -76,20 +80,20 @@ KERNOBJ		+= vers.o devcfg.o
 -include Makefile.local
 
 # GPIO driver
-KERNOBJ += gpio.o
-DEFS    += -DGPIO_ENABLED
+KERNOBJ         += gpio.o
+DEFS            += -DGPIO_ENABLED
 
 # ADC driver
-KERNOBJ += adc.o
-DEFS    += -DADC_ENABLED
+KERNOBJ         += adc.o
+DEFS            += -DADC_ENABLED
 
 # GLCD driver
-KERNOBJ += glcd.o
-DEFS	+= -DGLCD_ENABLED
+KERNOBJ         += glcd.o
+DEFS            += -DGLCD_ENABLED
 
 # PWM driver
-KERNOBJ += pwm.o
-DEFS 	+= -DPWM_ENABLED
+KERNOBJ         += pwm.o
+DEFS            += -DPWM_ENABLED
 
 all:		.deps sys machine unix.elf
 		$(SIZE) unix.elf
diff --git a/sys/pic32/retroone/devcfg.c b/sys/pic32/retroone/devcfg.c
index e17d102..a955010 100644
--- a/sys/pic32/retroone/devcfg.c
+++ b/sys/pic32/retroone/devcfg.c
@@ -23,3 +23,10 @@ PIC32_DEVCFG (
     DEVCFG3_USERID(0xffff) |    /* User-defined ID */
     DEVCFG3_FSRSSEL_7 |         /* Assign irq priority 7 to shadow set */
     DEVCFG3_FETHIO);            /* Default Ethernet i/o pins */
+
+#include "sys/param.h"
+#include "sys/conf.h"
+
+dev_t   rootdev = makedev(0, 1);        /* sd0a */
+dev_t   dumpdev = makedev(0, 2);        /* sd0b */
+dev_t   swapdev = makedev(0, 2);        /* sd0b */
diff --git a/sys/pic32/ubw32-uart-sdram/.gitignore b/sys/pic32/ubw32-uart-sdram/.gitignore
deleted file mode 100644
index 6a22af6..0000000
--- a/sys/pic32/ubw32-uart-sdram/.gitignore
+++ /dev/null
@@ -1,9 +0,0 @@
-.compileversion
-.deps/
-.oldversion
-machine
-sys
-unix.bin
-unix.map
-usbboot.map
-vers.c
diff --git a/sys/pic32/ubw32-uart-sdram/devcfg.c b/sys/pic32/ubw32-uart-sdram/devcfg.c
deleted file mode 100644
index ad48c89..0000000
--- a/sys/pic32/ubw32-uart-sdram/devcfg.c
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * Chip configuration.
- */
-#include "machine/pic32mx.h"
-
-PIC32_DEVCFG (
-    DEVCFG0_DEBUG_DISABLED,     /* ICE debugger enabled */
-
-    DEVCFG1_FNOSC_PRIPLL |      /* Primary oscillator with PLL */
-    DEVCFG1_POSCMOD_HS |        /* HS oscillator */
-    DEVCFG1_FPBDIV_1 |          /* Peripheral bus clock = SYSCLK/1 */
-    DEVCFG1_IESO |              /* Internal-external switch over */
-    DEVCFG1_WDTPS_1,            /* Watchdog postscale = 1/1 */
-
-    DEVCFG2_FPLLIDIV_2 |        /* PLL divider = 1/2 */
-    DEVCFG2_FPLLMUL_20 |        /* PLL multiplier = 20x */
-    DEVCFG2_UPLLIDIV_2 |        /* USB PLL divider = 1/2 */
-    DEVCFG2_FPLLODIV_1,         /* PLL postscaler = 1/1 */
-
-    DEVCFG3_USERID(0xffff) |    /* User-defined ID */
-    DEVCFG3_FSRSSEL_7 |         /* Assign irq priority 7 to shadow set */
-    DEVCFG3_FUSBIDIO |          /* USBID pin: controlled by USB */
-    DEVCFG3_FVBUSONIO |         /* VBuson pin: controlled by USB */
-    DEVCFG3_FCANIO |            /* Default CAN pins */
-    DEVCFG3_FETHIO);            /* Default Ethernet i/o pins */
diff --git a/sys/pic32/ubw32-uart/.gitignore b/sys/pic32/ubw32-uart/.gitignore
deleted file mode 100644
index 6a22af6..0000000
--- a/sys/pic32/ubw32-uart/.gitignore
+++ /dev/null
@@ -1,9 +0,0 @@
-.compileversion
-.deps/
-.oldversion
-machine
-sys
-unix.bin
-unix.map
-usbboot.map
-vers.c
diff --git a/sys/pic32/ubw32-uart/devcfg.c b/sys/pic32/ubw32-uart/devcfg.c
deleted file mode 100644
index ad48c89..0000000
--- a/sys/pic32/ubw32-uart/devcfg.c
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * Chip configuration.
- */
-#include "machine/pic32mx.h"
-
-PIC32_DEVCFG (
-    DEVCFG0_DEBUG_DISABLED,     /* ICE debugger enabled */
-
-    DEVCFG1_FNOSC_PRIPLL |      /* Primary oscillator with PLL */
-    DEVCFG1_POSCMOD_HS |        /* HS oscillator */
-    DEVCFG1_FPBDIV_1 |          /* Peripheral bus clock = SYSCLK/1 */
-    DEVCFG1_IESO |              /* Internal-external switch over */
-    DEVCFG1_WDTPS_1,            /* Watchdog postscale = 1/1 */
-
-    DEVCFG2_FPLLIDIV_2 |        /* PLL divider = 1/2 */
-    DEVCFG2_FPLLMUL_20 |        /* PLL multiplier = 20x */
-    DEVCFG2_UPLLIDIV_2 |        /* USB PLL divider = 1/2 */
-    DEVCFG2_FPLLODIV_1,         /* PLL postscaler = 1/1 */
-
-    DEVCFG3_USERID(0xffff) |    /* User-defined ID */
-    DEVCFG3_FSRSSEL_7 |         /* Assign irq priority 7 to shadow set */
-    DEVCFG3_FUSBIDIO |          /* USBID pin: controlled by USB */
-    DEVCFG3_FVBUSONIO |         /* VBuson pin: controlled by USB */
-    DEVCFG3_FCANIO |            /* Default CAN pins */
-    DEVCFG3_FETHIO);            /* Default Ethernet i/o pins */
diff --git a/sys/pic32/ubw32/Makefile b/sys/pic32/ubw32/Makefile-old
similarity index 100%
rename from sys/pic32/ubw32/Makefile
rename to sys/pic32/ubw32/Makefile-old
diff --git a/sys/pic32/ubw32-uart/Makefile b/sys/pic32/ubw32/Makefile-uart-old
similarity index 100%
rename from sys/pic32/ubw32-uart/Makefile
rename to sys/pic32/ubw32/Makefile-uart-old
diff --git a/sys/pic32/ubw32-uart-sdram/Makefile b/sys/pic32/ubw32/Makefile-uart-sdram-old
similarity index 100%
rename from sys/pic32/ubw32-uart-sdram/Makefile
rename to sys/pic32/ubw32/Makefile-uart-sdram-old
diff --git a/sys/pic32/ubw32-uart/UBW32-UART b/sys/pic32/ubw32/UBW32-UART
similarity index 100%
rename from sys/pic32/ubw32-uart/UBW32-UART
rename to sys/pic32/ubw32/UBW32-UART
diff --git a/sys/pic32/ubw32-uart-sdram/UBW32-UART-SDRAM b/sys/pic32/ubw32/UBW32-UART-SDRAM
similarity index 100%
rename from sys/pic32/ubw32-uart-sdram/UBW32-UART-SDRAM
rename to sys/pic32/ubw32/UBW32-UART-SDRAM