Changes
PicoCPC
,[[File:PicoCPC proto2.jpeg|600px]]
The PicoCPC use a Pico2, connected via multiplexor. This let enough pin to add an I2S DAC, MicroSD and some more control signals. Final PicoCPC will be with soldered RP2350B. The board can decode any I/O port and of course RAM/ROM cycles. As it use a Pico2, its RAM is doubled vs Pico1 and it can access a 8MB PSRAM as well. USB in FAT32&extfs, with nothing to do at the CPC side. There is no external ROM, so the microntroller access the emulated RAM/ROM and USB/MicroUSB at the same time: Direct write from the uSD to the CPC emulated RAM at 3MB/s (For example).
The PicoCPC is clocked at 375Mhz [https://www.cpcwiki.eu/forum/amstrad-cpc-hardware/picocpc/msg248409/#msg248409 Source]. So it is not as powerful as the [[RSF3]] clocked at 480Mhz. But it is more powerful than the [[M4 Board]] clocked at 168Mhz. [https://www.spinpoint.org/2015/10/23/cortex-m4-board/ Source]