Take a look at disassembled code

From ST2205u wiki

Here are the relevant disassembled code fragments:

 ./insds.pl -b 0x4000 -s symbols.def fwimage-segX.bin >> fwX


 7179-   AD 7C 03                   LDA     $037C               |-|.|
 717C-   C9 31                      CMP     #$31                |I1 |
 717E-   D0 09                      BNE     $7189               |P. |
 7180-   AD 7D 03                   LDA     $037D               |-}.|
 7183-   C9 00                      CMP     #$00                |I. |
 7185-   D0 02                      BNE     $7189               |P. |
 7187-   80 12                      BRA     $719B               |.. |
 71B7-   A9 FF                      LDA     #$FF                |). |
 71B9-   A2 FF                      LDX     #$FF                |". |
 71BB-   8D 7C 03                   STA     $037C               |.|.|
 71BE-   8E 7D 03                   STX     $037D               |.}.|
 707F-   48                         PHA                         |H  |
 7080-   A9 55                      LDA     #$55                |)U |
 7082-   8D 40 02                   STA     $0240               |.@.|
 7085-   A9 53                      LDA     #$53                |)S |
 7087-   8D 41 02                   STA     $0241               |.A.|
 708A-   A9 42                      LDA     #$42                |)B |
 708C-   8D 42 02                   STA     $0242               |.B.|
 708F-   A9 53                      LDA     #$53                |)S |
 7154-   9C 70 03                   STZ     $0370               |.p.|
 7157-   9C 71 03                   STZ     $0371               |.q.|
 715A-   AD 16 02                   LDA     $0216               |-..|
 715D-   9C 70 03                   STZ     $0370               |.p.|
 7160-   AD 17 02                   LDA     $0217               |-..|
 7163-   8D 6F 03                   STA     $036F               |.o.|
 7166-   0E 6F 03                   ASL     $036F               |.o.|
 7169-   2E 70 03                   ROL     $0370               |.p.|
 716C-   2E 71 03                   ROL     $0371               |.q.|                                                                                  
 45FD-   A9 2A                      LDA     #$2A                |)* |
 45FF-   8D 00 80                   STA     $8000               |...|
 4602-   A9 00                      LDA     #$00                |). |
 4604-   8D 00 C0                   STA     $C000               |..@|
 4607-   A9 02                      LDA     #$02                |). |
 4609-   8D 00 C0                   STA     $C000               |..@|
 460C-   A9 00                      LDA     #$00                |). |
 460E-   8D 00 C0                   STA     $C000               |..@|
 4611-   A9 81                      LDA     #$81                |). |
 4613-   8D 00 C0                   STA     $C000               |..@|
 4616-   A9 2B                      LDA     #$2B                |)+ |
 4618-   8D 00 80                   STA     $8000               |...|