diff --git a/sdk/firmware/bochsrc_amd64.cfg b/sdk/firmware/bochsrc_amd64.cfg
index 03fea9c..4701a1d 100644
--- a/sdk/firmware/bochsrc_amd64.cfg
+++ b/sdk/firmware/bochsrc_amd64.cfg
@@ -2,7 +2,7 @@
 plugin_ctrl: usb_xhci=false, serial=true, e1000=false, extfpuirq=true, parallel=true, usb_uhci=false, biosdev=true, unmapped=true, gameport=true, ne2k=false, speaker=true, iodebug=false, pcipnic=false, usb_ohci=false
 config_interface: textconfig
 display_library: x
-memory: host=64, guest=64
+memory: host=64, guest=2048
 romimage: file="../sdk/firmware/ovmf_pure_amd64.fd", address=0x00000000, options=none
 vgaromimage: file="../sdk/firmware/vgabios.bin"
 boot: floppy
@@ -45,7 +45,7 @@ error: action=report
 panic: action=ask
 keyboard: type=mf, serial_delay=250, paste_delay=100000, user_shortcut=none
 mouse: type=ps2, enabled=false, toggle=ctrl+mbutton
-com1: enabled=true, mode=null
+com1: enabled=true, mode=file, dev=dbgport.txt
 com2: enabled=false
 com3: enabled=false
 com4: enabled=false
diff --git a/sdk/firmware/bochsrc_i686.cfg b/sdk/firmware/bochsrc_i686.cfg
index 49ea10f..2bf2cdf 100644
--- a/sdk/firmware/bochsrc_i686.cfg
+++ b/sdk/firmware/bochsrc_i686.cfg
@@ -2,7 +2,7 @@
 plugin_ctrl: usb_xhci=false, serial=true, e1000=false, extfpuirq=true, parallel=true, usb_uhci=false, biosdev=true, unmapped=true, gameport=true, ne2k=false, speaker=true, iodebug=false, pcipnic=false, usb_ohci=false
 config_interface: textconfig
 display_library: x
-memory: host=64, guest=64
+memory: host=64, guest=2048
 romimage: file="../sdk/firmware/ovmf_pure_i686.fd", address=0x00000000, options=none
 vgaromimage: file="../sdk/firmware/vgabios.bin"
 boot: floppy
@@ -45,7 +45,7 @@ error: action=report
 panic: action=ask
 keyboard: type=mf, serial_delay=250, paste_delay=100000, user_shortcut=none
 mouse: type=ps2, enabled=false, toggle=ctrl+mbutton
-com1: enabled=true, mode=null
+com1: enabled=true, mode=file, dev=dbgport.txt
 com2: enabled=false
 com3: enabled=false
 com4: enabled=false