diff options
| author | Jan Tuomi <jans.tuomi@gmail.com> | 2023-04-13 14:48:34 +0300 |
|---|---|---|
| committer | Jan Tuomi <jans.tuomi@gmail.com> | 2023-04-13 14:49:59 +0300 |
| commit | 9d4c6fc299294ac36f7082599edce19286fa0f99 (patch) | |
| tree | e7601bb1cd9950482f125377d25b6d5d40b72e62 /asm/bootstrap.atk16 | |
| parent | afd5f32e56d3d30bfa98fb35deff51febf50e594 (diff) | |
Add @let directive, start pondering interrupt control
Diffstat (limited to 'asm/bootstrap.atk16')
| -rw-r--r-- | asm/bootstrap.atk16 | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/asm/bootstrap.atk16 b/asm/bootstrap.atk16 new file mode 100644 index 0000000..c7ab63e --- /dev/null +++ b/asm/bootstrap.atk16 @@ -0,0 +1,23 @@ +@let stack_segment 0x8000 +@let vector_table 0x10 + +@address vector_table + hlt_isr ; 0x10 ISR0 + hlt_isr ; 0x11 ISR1 + hlt_isr ; 0x12 ISR2 + hlt_isr ; 0x13 ISR3 + stack_segment ; 0x14 Stack address + +@label hlt_isr + ldi 0x55 RA + hlt +@label program_segment + +@address 0x0 +; set up stack pointer to point to beginning of stack segment + ldi 0x14 RA + ldr RA RF + jpi main + +@address program_segment +; set up address for program code |