penguin86/pato-z80-home-computer
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Trying to get Immediate to work

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This commit is contained in:
Daniele Verducci (ZenPenguin)
2020-12-15 17:34:50 +01:00
parent fb83094158
commit f1e7622e17
5 changed files with 21 additions and 10 deletions
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2
assembly/bios/main-dev.asm Normal file
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@ -0,0 +1,2 @@
org 0xA000 ; Set starting position to ram
include 'main.asm'

18
assembly/bios/monitor.asm
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@ -7,23 +7,23 @@
; S (SET) $pos $val Replaces byte at $pos with $val
; 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.
; A (ADB) Enters in Assembly Depoy Bridge mode: loads all the incoming bytes in application memory and starts executing.
; The commands are entered with a single letter and the program completes the command
include 'libs/strings.asm'
; CONSTANTS
; All monitor commands are 3 chars long.
MON_WELCOME: DB "PAT80 MEMORY MONITOR 0.1",10,0
MON_WELCOME: DB "PAT80 MEMORY MONITOR 0.2",10,0
MON_COMMAND_HELP: DB "HELP",0 ; null terminated strings
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_COMMAND_ADB: DB "ADB",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_HELP: DB 10,"Available commands:\nHELP prints this message\nDUMP shows memory content\nSET sets memory content LOAD\nRUN executes code\nADB starts Assembly Deploy Bridge",0
MON_MSG_ADB: DB 10,"Waiting for data.",0
MON_ERR_SYNTAX: DB " Syntax error",0
Monitor_main:
@ -57,9 +57,9 @@ Monitor_main:
ld hl, MON_COMMAND_RUN
cp (hl)
jp z, monitor_run
ld hl, MON_COMMAND_IMMEDIATE
ld hl, MON_COMMAND_ADB
cp (hl)
jp z, monitor_immediate
jp z, monitor_adb
; Unrecognized command: print error and beep
ld bc, MON_ERR_SYNTAX
call Print
@ -96,8 +96,8 @@ monitor_run:
jp APP_SPACE ; Start executing code
jp monitor_main_loop
monitor_immediate:
ld bc, MON_COMMAND_IMMEDIATE + 1 ; autocomplete command
monitor_adb:
ld bc, MON_COMMAND_ADB + 1 ; autocomplete command
call Print
; start copying incoming data to application space
call monitor_copyTermToAppMem