Has anyone gotten Espruino to work on a Wemos D1 Mini? What am I missing?[SOLVED: dio mode]

4MB-c1 and 32m produce the same behavior:

Z:\ESPTOOL\espruino_1v95_esp8266_4mb>..\esptool.py --port COM3 --baud 115200 write_flash --flash_freq 80m --flash_mode qio --flash_size 4MB-c1 0x0000 boot_v1.6.bin 0x1000 espruino_esp8266_user1.bin  0x3FC000 esp_init_data_default.bin 0x3FE000 blank.bin
esptool.py v2.3-dev
Connecting....
Detecting chip type... ESP8266
Chip is ESP8266EX
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Flash params set to 0x006f
Compressed 3856 bytes to 2763...
Wrote 3856 bytes (2763 compressed) at 0x00000000 in 0.2 seconds (effective 124.4 kbit/s)...
Hash of data verified.
Compressed 509332 bytes to 340820...
Wrote 509332 bytes (340820 compressed) at 0x00001000 in 29.9 seconds (effective 136.3 kbit/s)...
Hash of data verified.
Compressed 128 bytes to 75...
Wrote 128 bytes (75 compressed) at 0x003fc000 in 0.0 seconds (effective 73.1 kbit/s)...
Hash of data verified.
Compressed 4096 bytes to 26...
Wrote 4096 bytes (26 compressed) at 0x003fe000 in 0.0 seconds (effective 4095.9 kbit/s)...
Hash of data verified.

Leaving...
Hard resetting...

Same output at 74880 baud:

ets Jan  8 2013,rst cause:2, boot mode:(3,6)

load 0x40100000, len 2408, room 16
tail 8
chksum 0xef
load 0x00000000, len 0, room 0
tail 0
chksum 0xef
load 0x00000000, len 0, room 8
tail 0
chksum 0xef
csum 0xef
csum err
ets_main.c

I have two boards showing identical behavior (the new one, and the one I removed the transistors between DTR/RTS and the strapping pins on). They are being powered off MicroUSB (could it be a power problem? Do I need an external 3.3v power supply? If so, that makes them a bit less appealing)