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| author | Juan J. Martinez <jjm@usebox.net> | 2021-05-03 08:21:10 +0100 |
|---|---|---|
| committer | Juan J. Martinez <jjm@usebox.net> | 2021-05-03 10:00:00 +0100 |
| commit | c3b0fa04a663fe233765b83d3be41a42aa08c25d (patch) | |
| tree | 0befda349001ef6ce306b39378f9c70ad917363e /lib/cpcrslib/cpc_DisableEnableFirmware.s | |
| download | return-of-traxtor-cpc-main.tar.gz return-of-traxtor-cpc-main.zip | |
Diffstat (limited to 'lib/cpcrslib/cpc_DisableEnableFirmware.s')
| -rw-r--r-- | lib/cpcrslib/cpc_DisableEnableFirmware.s | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/lib/cpcrslib/cpc_DisableEnableFirmware.s b/lib/cpcrslib/cpc_DisableEnableFirmware.s new file mode 100644 index 0000000..00a8710 --- /dev/null +++ b/lib/cpcrslib/cpc_DisableEnableFirmware.s @@ -0,0 +1,28 @@ +.globl _cpc_DisableFirmware + +_cpc_DisableFirmware:: + DI + LD HL,(#0X0038) + LD (backup_fw),HL + LD HL,#0X0038 + LD (HL),#0XFB ;EI + INC HL + LD (HL),#0XC9 ;RET + EI + RET + +backup_fw: + .DW #0 + +.globl _cpc_EnableFirmware + +_cpc_EnableFirmware:: + DI + LD DE,(backup_fw) + LD HL,#0X0038 + LD (HL),E ;EI + INC HL + LD (HL),D ;RET + EI + RET + |