Working bios added to rom

new/bios.asm

@@ -1,5 +1,5 @@
 #target bin
-#include "memory.inc"
+#include "build/memory.inc"
 #include "hardware.inc"
 #include "bios.inc"
 
@@ -15,7 +15,7 @@ UART_DATA               .equ UART_BASE+001h
 BUF_SIZE                .equ 16
 BUF_SIZE_MASK           .equ 00fh
 
-WORKSPACE               .equ SHARED_MEM_START+01000h
+WORKSPACE               .equ SHARED_MEM_START+00400h
 TX_HEAD                 .equ WORKSPACE+000h
 TX_TAIL                 .equ WORKSPACE+001h
 TX_COUNT                .equ WORKSPACE+002h
@@ -34,15 +34,24 @@ RX_BUF                  .equ TX_BUF+BUF_SIZE
     jp boot_copy
 .org 00008h
 boot_copy:
-    ; copy bios to top 16k
     di
+    ; Make sure system reg is in its default state
+    ; banking enabled
+    ; bank 1 selected
     ld          a,BOOT_BANK_MAPPING
     ld          (SYSTEM_REGISTER),a
     ld          sp,BIOS_STACK_TOP
+    ; copy bios to top 16k
     ld          hl,BIOS_ROM_START
     ld          de,SHARED_MEM_START
     ld          bc,BIOS_size
     ldir
+    ; copy basic to top 16k
+    ld          hl,BASIC_ROM_START
+    ld          de,BASIC_RAM_START
+    ld          bc,BASIC_ROM_SIZE
+    ldir
+
     jp          init
 
 #code BIOS, SHARED_MEM_START
@@ -115,6 +124,9 @@ init:
     ld          hl,msg_header
     call        puts
 
+    ; Enter bios
+    jp          BASIC_RAM_START
+
     ; Shouldnt come here
     ; just to be safe an endless loop
 0$:
@@ -324,6 +336,7 @@ uart_kick:
 ; needs a (byte to tx)
 ; -------------------------------------------------------
 putc:
+    push        af
     push        de
     push        bc
     push        hl
@@ -363,6 +376,7 @@ putc:
     pop         hl
     pop         bc
     pop         de
+    pop         af
     ret
 
 ; -------------------------------------------------------