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WIP Immediate function in monitor (reads bytes from stdin and executes immediately)

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Daniele Verducci su MatissePenguin 2020-11-25 21:07:46 +01:00
parent 229ba1d48d
commit 4dcbfa8668
2 changed files with 23 additions and 3 deletions
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2
assembly/bios/main.asm
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@ -23,7 +23,7 @@ jp Sysinit ; Startup vector: DO NOT MOVE! Must be the first instruction
; MEMORY CONFIGURATION
SYS_VAR_SPACE: EQU 0x8000
DRV_VAR_SPACE: EQU 0x9000
APP_VAR_SPACE: EQU 0xA000
APP_SPACE: EQU 0xA000
; SYSTEM CONFIGURATION
IO_0: EQU 0x00

24
assembly/bios/monitor.asm
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@ -5,8 +5,9 @@
; H (HELP) Shows available commands
; D (DUMP) $pos Dumps first 100 bytes of memory starting at $pos
; S (SET) $pos $val Replaces byte at $pos with $val
; L (LOAD) $pos $val Loads all the incoming bytes in memory starting from $pos. Ends when "0" is received 8 times.
; L (LOAD) $pos $val
; R (RUN) $pos Starts executing code from $pos
; I (IMMEDIATE) Loads all the incoming bytes in application memory starting from $pos. When "0" is received 8 times starts executing the loaded code.
; The commands are entered with a single letter and the program completes the command
include 'libs/strings.asm'
@ -19,8 +20,10 @@ MON_COMMAND_DUMP: DB "DUMP",0
MON_COMMAND_SET: DB "SET",0
MON_COMMAND_LOAD: DB "LOAD",0
MON_COMMAND_RUN: DB "RUN",0
MON_COMMAND_IMMEDIATE: DB "IMMEDIATE",0
MON_ARG_HEX: DB " 0x",0
MON_HELP: DB 10,"Available commands: HELP, DUMP, SET, LOAD, RUN",0
MON_MSG_IMMEDIATE: DB 10,"Waiting for data. 00000000 to execute.",0
MON_ERR_SYNTAX: DB " Syntax error",0
Monitor_main:
@ -54,6 +57,9 @@ Monitor_main:
ld hl, MON_COMMAND_RUN
cp (hl)
jp z, monitor_run
ld hl, MON_COMMAND_IMMEDIATE
cp (hl)
jp z, monitor_immediate
; Unrecognized command: print error
ld bc, MON_ERR_SYNTAX
call Print
@ -86,7 +92,21 @@ monitor_load:
monitor_run:
ld bc, MON_COMMAND_RUN + 1 ; autocomplete command
call Print
jp APP_VAR_SPACE ; Start executing code
jp APP_SPACE ; Start executing code
jp monitor_main_loop
monitor_immediate:
ld bc, MON_COMMAND_IMMEDIATE + 1 ; autocomplete command
call Print
; start copying incoming data to application space
monitor_immediate_copyToAppSpace:
ld bc, APP_SPACE
call Readc
ld (bc), a
cp a, 0
jmp z monitor_immediate_copyToAppSpace ; così esce al primo 0 che trova, ovviamente invece vogliamo aspettare 8 zeri
jp APP_SPACE ; Start executing code
jp monitor_main_loop
monitor_arg_byte: