diff options
Diffstat (limited to 'nuttx/arch/z80/src/z180/z180_irq.c')
| -rw-r--r-- | nuttx/arch/z80/src/z180/z180_irq.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/nuttx/arch/z80/src/z180/z180_irq.c b/nuttx/arch/z80/src/z180/z180_irq.c index 929f38d6a..d5d625b33 100644 --- a/nuttx/arch/z80/src/z180/z180_irq.c +++ b/nuttx/arch/z80/src/z180/z180_irq.c @@ -58,6 +58,14 @@ volatile chipreg_t *current_regs; +/* This holds the value of the MMU's CBR register. This value is set to the + * interrupted tasks's CBR on interrupt entry, changed to the new task's CBR if + * an interrrupt level context switch occurs, and restored on interrupt exit. In + * this way, the CBR is always correct on interrupt exit. + */ + +uint8_t current_cbr; + /**************************************************************************** * Private Data ****************************************************************************/ |