Added experimental 6502 backend and Creativision support

Makefile

@@ -4,14 +4,14 @@
 #
 CFLAGS = -O
 
-build: cvbasic.o node.o z80.o
-	@$(CC) cvbasic.o node.o z80.o -o cvbasic
+build: cvbasic.o node.o driver.o cpuz80.o cpu6502.o
+	@$(CC) cvbasic.o node.o driver.o cpuz80.o cpu6502.o -o cvbasic
 
 check: build
 	@./cvbasic examples/viboritas.bas /tmp/viboritas.asm
 
 clean:
-	@rm cvbasic cvbasic.o node.o z80.o
+	@rm cvbasic cvbasic.o node.o driver.o cpuz80.o cpu6502.o
 
 love:
 	@echo "...not war"

README.md

@@ -1,8 +1,8 @@
-# CVBasic compiler v0.5.2
+# CVBasic compiler v0.6.0
 *(c) Copyright 2024 Óscar Toledo Gutiérrez*
 *https://nanochess.org/*
 
-CVBasic is a BASIC language cross-compiler for the Colecovision/SG1000/MSX/SVI-318/328/Sord M5, with a syntax alike to Qbasic.
+CVBasic is a BASIC language cross-compiler with a syntax alike to QBasic for the Colecovision/SG1000/MSX/SVI-318/328/Sord M5/Memotech.
 
 The CVBasic compiler can create programs up to 1 MB using the BANK statements (16K bank switching support across Colecovision+MSX+SG1000). Currently, Spectravideo SVI-318/328, Sord M5 and Memotech doesn't have bank-switch support because there's no cartridge hardware supporting it.
 
@@ -67,6 +67,10 @@ Using CVBasic to compile a Memotech MTX program:
 
 For Memotech, use .run extension instead of .rom, and for CP/M option use .com extension.
 
+Using CVBasic to compile a VTech Creativision (Dick Smith's Wizzard) program:
+
+    cvbasic --vtech game.bas game.asm
+
 ### Notes
 
 The current official version is v0.5.1.
@@ -84,6 +88,16 @@ Currently for Memotech the expressions CONT1.KEY and CONT2.KEY aren't operative.
 Many people is developing games using CVBasic, feel free to check some of these examples at the [AtariAge Colecovision Programming forum](https://forums.atariage.com/forum/55-colecovision-programming/)
 
 
+### Experimental things
+
+Vtech Creativision support is experimental (but able to compile Viboritas.bas), it doesn't handle currently CONT1.KEY and CONT2.KEY, and the following things doesn't work because the support code hasn't been coded:
+
+* SCREEN statement doesn't do anything.
+* PLAY statement doesn't do anything.
+
+Notice the 6502 support library hasn't been tested properly. In particular the VDP code could be buggy in real hardware.
+
+
 ### Supporting the developer
 
 If you find CVBasic useful, please show your appreciation making a donation via Paypal ($9 USD suggested) to b-i+y-u+b-i (at) gmail.com

compile_with_warnings.sh

@@ -1,2 +1,2 @@
 # Compile CVBasic with Clang warnings, except some too twisted
-gcc -Weverything -Wno-sign-conversion -Wno-implicit-int-conversion -Wno-switch-enum -Wno-padded -Wno-poison-system-directories -Wno-shadow cvbasic.c node.c z80.c -o cvbasic
+gcc -Weverything -Wno-sign-conversion -Wno-implicit-int-conversion -Wno-switch-enum -Wno-padded -Wno-poison-system-directories -Wno-shadow cvbasic.c node.c driver.c cpu6502.c cpuz80.c -o cvbasic