] 2. The internal mapper is (in many cases) located in a higher slot the
] external mapper is located in. When the system boots up, the first slot
] with RAM is used (except for MSX turbo R, which for some reason always
] selects the internal memory mapper). So using only the largest mapper is by
The MSX turbo R selects the internal mapper, because access to the internal
RAM is significantly faster then to external RAM in R800 mode. If the R800
runs a program from internal RAM, it runs approximately 6 times as fast as
the Z80. However, it the R800 runs the same program from external RAM, it is
only approximately 2 times as fast as the Z80.
Kind regards,
Alex Wulms
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