4B INT 4B - Z100 - Slave 8259 - S100 vectored line 3
4B INT 4B - Common Access Method SCSI interface (draft revision 1.9)
4B INT 4B - Tandy 2000 - EQUIPMENT DETERMINATION
4B INT 4B - Acorn BBC Master 512 - "OSBYTE" - MISC FUNCTIONS USING REGISTER PARAMS
4B00 INT 4B - TI Professional PC - PARALLEL PORT - OUTPUT CHARACTER
4B01 INT 4B - TI Professional PC - PARALLEL PORT - INITIALIZE PRINTER
4B02 INT 4B - TI Professional PC - PARALLEL PORT - GET PRINTER STATUS
4B80 INT 4B - IBM SCSI interface
4B8102DX0000 INT 4B - Virtual DMA Specification (VDS) - GET VERSION
4B8103 INT 4B - Virtual DMA Specification - LOCK DMA REGION
4B8104 INT 4B - Virtual DMA Specification - UNLOCK DMA REGION
4B8105 INT 4B - Virtual DMA Specification - SCATTER/GATHER LOCK REGION
4B8106 INT 4B - Virtual DMA Specification - SCATTER/GATHER UNLOCK REGION
4B8107 INT 4B - Virtual DMA Specification - REQUEST DMA BUFFER
4B8108 INT 4B - Virtual DMA Specification - RELEASE DMA BUFFFER
4B8109DX0000 INT 4B - Virtual DMA Specification - COPY INTO DMA BUFFER
4B810ADX0000 INT 4B - Virtual DMA Specification - COPY OUT OF DMA BUFFER
4B810B INT 4B - Virtual DMA Specification - DISABLE DMA TRANSLATION
4B810C INT 4B - Virtual DMA Specification - ENABLE DMA TRANSLATION
4B810D INT 4B - QEMM-386 - BUG