| Arm Musca boards (``musca-a``, ``musca-b1``) | 
 | ============================================ | 
 |  | 
 | The Arm Musca development boards are a reference implementation | 
 | of a system using the SSE-200 Subsystem for Embedded. They are | 
 | dual Cortex-M33 systems. | 
 |  | 
 | QEMU provides models of the A and B1 variants of this board. | 
 |  | 
 | Unimplemented devices: | 
 |  | 
 | - SPI | 
 | - |I2C| | 
 | - |I2S| | 
 | - PWM | 
 | - QSPI | 
 | - Timer | 
 | - SCC | 
 | - GPIO | 
 | - eFlash | 
 | - MHU | 
 | - PVT | 
 | - SDIO | 
 | - CryptoCell | 
 |  | 
 | Note that (like the real hardware) the Musca-A machine is | 
 | asymmetric: CPU 0 does not have the FPU or DSP extensions, | 
 | but CPU 1 does. Also like the real hardware, the memory maps | 
 | for the A and B1 variants differ significantly, so guest | 
 | software must be built for the right variant. | 
 |  |