Sega Master System/Boot ROM (M404 prototype)

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BootROM SMS US M404.png

Sega Master System/Boot ROM (M404 prototype)
Prerelease of: Sega Master System/Boot ROM
System: Sega Master System
Source: Prototype Master System
Found by: Bock

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The M404 prototype boot ROM is a boot ROM that was used in a prototype Sega Master System unit sent to Sega of America.

Only two games will properly boot with this ROM, which are the Japanese versions of Fantasy Zone and Choplifter. This is because the boot ROM checks for the string "COPYRIGHT SEGA" at offset $7FE0 rather than "TMR SEGA" at offsets $7FF0, $3FF0 and $1FF0 like commercial boot ROMs do[1].

Comparisons

Main article: Sega Master System/Boot ROM (M404 prototype)/Comparisons.

References


Sega Master System
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