Added old tape routines and started with cload

bios.asm

@@ -26,6 +26,7 @@ TX_BUSY                 .equ WORKSPACE+006h
 TX_BUF                  .equ WORKSPACE+007h
 RX_BUF                  .equ TX_BUF+BUF_SIZE
 SYSREG_VALUE            .equ RX_BUF+BUF_SIZE
+END_OF_BIOS_WS          .equ SYSREG_VALUE+001h
 
 ; -------------------------------------------------------
 ; entry
@@ -99,6 +100,12 @@ boot_copy:
     jp          setrom
 .ORG BIOS_BANK
     jp          bank
+.ORG BIOS_CAS_READ_BLOCK
+    jp          read_block
+.ORG BIOS_CAS_WAIT_SILENCE
+    jp          wait_silence
+.ORG BIOS_CAS_READ_BLOCK_DRY
+    jp          read_block_dry
 
 ; -------------------------------------------------------
 ; BIOS ENTRY
@@ -137,9 +144,30 @@ init:
 
     ; Enter bios
     jp          BASIC_RAM_START
+; 100$
+;     ld          hl,msg_start
+;     call        BIOS_PUTS
+;     call        BIOS_FLUSH
+;     call        read_block
+;     jr          c,101$          ; error
+;     ; block received correctly
+;     ld          hl,BLOCK_BUFFER
+;     call        BIOS_PUTS
+;     call        BIOS_FLUSH
+;     jp          100$
+; 101$:
+;     add         '0'             ; get error number
+;     call        BIOS_PUTC
+;     ld          a, 0ah
+;     call        BIOS_PUTC
+;     ld          a, 0dh
+;     call        BIOS_PUTC
+;     call        BIOS_FLUSH
+;     jp          100$
 
     ; Shouldnt come here
     ; just to be safe an endless loop
+    ei
 0$:
     call        getc
     call        putc
@@ -524,3 +552,8 @@ bank:
 ; Strings
 ; -------------------------------------------------------
 msg_header: .db "BIOS v1.0 - Joppe Blondel",00dh,00ah,000h
+
+; -------------------------------------------------------
+; Other files
+; -------------------------------------------------------
+#include "tape.asm"