From e17f2e69071f31b0edc90f90efd35134270be54f Mon Sep 17 00:00:00 2001 From: Virgil Dupras Date: Sat, 13 Jun 2020 13:29:04 -0400 Subject: [PATCH] pcat: read sector from floppy --- blk/811 | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/blk/811 b/blk/811 index 040b95d..8f55a6d 100644 --- a/blk/811 +++ b/blk/811 @@ -1,14 +1,15 @@ H@ ORG ! 0x7c00 BIN( ! ( BIOS loads boot bin at 0x7c00 ) JMP8, L1 FWR8 ( start ) ORG @ 0x25 + HERE ! ( bypass BPB ) -L2 BSET ( msg ) ," Hello, World!" 0 A, L1 FSET ( start ) -CLI, CLD, AX AX XORxx, DS AX MOVsx, STI, -AH 0 MOVri, AL 2 MOVri, ( 80x25 BW video mode ) 0x10 INT, -SI L2 @ ( msg ) MOVrI, AH 0x0e MOVri, ( print char ) +CLI, CLD, AX AX XORxx, DS AX MOVsx, ES AX MOVsx, STI, +AH 2 MOVri, DX 0 MOVrI, CH 0 MOVri, CL 2 MOVri, AL 1 MOVri, +BX 0x8000 MOVrI, 0x13 INT, ( read 2nd sector of boot floppy ) +SI 0x8000 MOVrI, AH 0x0e MOVri, ( print char ) L1 BSET ( loop ) LODSB, AL AL ORrr, ( end of str? ) JZ, L2 FWR8 ( next ) 0x10 INT, ( print char ) JMP8, L1 ( loop ) BWR L2 FSET ( next ) AH 0 MOVri, 0x16 INT, ( read kbd ) AH 0x0e MOVri, 0x10 INT, ( spit read char ) HLT, ( done ) ORG @ 0x1fe + HERE ! 0x55 A, 0xaa A, +," Hello from 2nd sector of boot floppy!" 0 A,