I have wrote a complete BASIC program for loading the hook code using the MSX and used "LLIST" command to transfer the program to the PC using the hook code itself.

This version was named "complete" because it has instructions on how to change the baudrate and how to use parity

10 REM
20 REM Joy232 hook code
30 REM danjovic 2016
40 REM version 1.31 19/12/2016
50 REM
60 EI=&HFAF5:SIZE=63
70 FOR A = EI TO EI+SIZE
80 READ B$: POKE A,VAL("&H"+B$)
90 NEXT A
100 REM
110 POKE &HFFB8,&HFA
120 POKE &HFFB7,&HF5
130 POKE &HFFB6,&HC3
140 REM
150 DATA F3,F5,C5,E5,6F,3E,0F,D3
160 DATA A0,26,FF,A7,CB,15,CB,14
170 DATA 06,0B,DB,A2,CB,87,CB,1C
180 DATA CB,1D,CE,00,D3,A1,0E,11
190 DATA 0D,20,FD,10,ED,E1,C1,F1
200 DATA A7,FB,33,33,C9,CE,00,D3
210 DATA A1,0E,06,0D,20,FD,10,ED
220 DATA E1,C1,F1,FB,33,33,C9,00
230 REM
240 REM To change baudrate
250 REM
260 REM POKE &HFB27,value
270 REM
280 REM Baudrate  value
290 REM 1200      170
300 REM 2400      83
310 REM 4800      39
320 REM 9600      17
330 REM 14400     10
340 REM 19200      6
350 REM
360 REM ----------------------
370 REM To use parity
380 REM
390 REM POKE &HF96D,value
400 REM
410 REM Parity    value
420 REM NONE        0 (or 1)
430 REM EVEN        2
440 REM ODD         3