bmecfa

 down pmt = 100k
loan = 200k

PV = -200K
n = 12*30 = 360
y = 6%/12 = 0.5%
FV = 0
CPT PMT -> monthly PMT = 1199.10

then according to TI manual
Generating an Amortization Schedule Automatically
After entering the initial values for P1 and P2, you can compute an
amortization schedule automatically.
1. Press & \.
— or —
If INT is displayed, press # to display the current P1 value.
2. Press %. Both P1 and P2 update automatically to represent the
next range of payments.

P1 = 1, P2 = 48

BAL = 189229.06