ff.cfg

interface=shugart
pin02=high  # 8/5 select - low is 5.25"
# nrdy is inverted but then goes to a bunch of logic - check at fd1771 pin 32 (active high)
pin34=low # nrdy   # nrdy
display-type=oled128x64-rotate-narrow-inverse
side-select-glitch-filter = 50
track-change = instant
write-drain = instant
index-suppression = no
head-settle-ms = 10
motor-delay = ignore
chgrst = step
ejected-on-startup = no
image-on-startup = init
display-probe-ms = 0

img.cfg

#img.cfg
[::256256] # Std 8" SS/SD
cyls = 77
heads = 1
rpm = 360
gap3 = 42
interleave = 1
bps = 128     
secs = 26
mode = fm
id = 1
rate = 250
# original post has other types