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add memory mapped registers for keyboard status and data

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Erick
2022-02-05 00:49:27 +01:00
parent 645261f07a
commit 74a32b7a37
1 changed files with 6 additions and 0 deletions
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tyvm.c
+6
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@@ -30,6 +30,12 @@
#define FALSE 0 #define FALSE 0
/* memory mapped register tables */
enum mmr {
MMR_KSR = 0xFE00, // keyboard status
MMR_KDR = 0xFE02 // keyboard data
}
/* Initializing 10 registers of which: /* Initializing 10 registers of which:
8 general purpose, 1 program counter, 1 conditional */ 8 general purpose, 1 program counter, 1 conditional */
enum registers { enum registers {