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authorChristian Krinitsin <mail@krinitsin.com>2025-07-03 16:27:09 +0000
committerChristian Krinitsin <mail@krinitsin.com>2025-07-03 16:27:09 +0000
commit4d9e26c0333abd39bdbd039dcdb30ed429c475ba (patch)
tree4010d5fb3e8bc48c110a2c1ff2a16b8648cb86bb /results/classifier/accel-gemma3:12b/kvm/740895
parent5541099586dbd6018574cb44e1934907c121526f (diff)
downloadqemu-analysis-4d9e26c0333abd39bdbd039dcdb30ed429c475ba.tar.gz
qemu-analysis-4d9e26c0333abd39bdbd039dcdb30ed429c475ba.zip
add gemma accelerator classification results
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+
+qemu freeze when loading msdos with EMM386.EXE NOEMS HIGHSCAN
+
+Qemu version used : 0.11.2 and 0.14.0
+Guest : Ms-Dos 6.2
+Host : Ubuntu 10.04 with 2.6.32-29-generic SMP i686
+Starting Qemu with command : qemu -hda dos.img -cpu 486 -m 16
+
+When I start msDos under Qemu with the option (in CONFIG.SYS) 
+DEVICE=C:\DOS\EMM386.EXE NOEMS HIGHSCAN
+the guest freeze.
+If I remove "HIGHSCAN" system is booting (but my software is not working).
+
+The whole thing is working on a real computer with a 486 with 16Mb ram or a PII.
+
+"HIGHSCAN switch allows EMM386.EXE to map expanded memory pages or upper memory blocks (UMBs) over portions of the upper memory area (UMA) used by system read-only memory " from http://support.microsoft.com/kb/96522/en-us
+
+I add some traces inside "default_ioport_read" in ioport.c, but I don't see any access to F000h-F7FFh like said in ms help.
+
+Before the system hung, there is access to dma1, dma page register and dma2 :
+
+inb : 0087 00
+outb: 000c 00
+inb : 0000 00
+inb : 0000 00
+inb : 0001 00
+inb : 0001 00
+inb : 0083 00
+outb: 000c 00
+inb : 0002 00
+inb : 0002 00
+inb : 0003 00
+inb : 0003 00
+inb : 0081 00
+outb: 000c 00
+inb : 0004 00
+inb : 0004 00
+inb : 0005 00
+inb : 0005 00
+inb : 0082 00
+outb: 000c 00
+inb : 0006 00
+inb : 0006 00
+inb : 0007 00
+inb : 0007 00
+inb : 008b 00
+outb: 00d8 00
+inb : 00c4 00
+inb : 00c4 00
+inb : 00c6 00
+inb : 00c6 00
+inb : 0089 00
+outb: 00d8 00
+inb : 00c8 00
+inb : 00c8 00
+inb : 00ca 00
+inb : 00ca 00
+inb : 008a 00
+outb: 00d8 00
+inb : 00cc 00
+inb : 00cc 00
+inb : 00ce 00
+inb : 00ce 00
+outb: 000c 00
+outb: 00d8 00
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