From 9d4c6fc299294ac36f7082599edce19286fa0f99 Mon Sep 17 00:00:00 2001
From: Jan Tuomi <jans.tuomi@gmail.com>
Date: Thu, 13 Apr 2023 14:48:34 +0300
Subject: Add @let directive, start pondering interrupt control

---
 asm/bootstrap.atk16 | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 asm/bootstrap.atk16

(limited to 'asm/bootstrap.atk16')

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
-- 
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