TW268113B - Dma emulation for non-dma capable interface cards - Google Patents

Dma emulation for non-dma capable interface cards

Info

Publication number
TW268113B
TW268113B TW83110515A TW83110515A TW268113B TW 268113 B TW268113 B TW 268113B TW 83110515 A TW83110515 A TW 83110515A TW 83110515 A TW83110515 A TW 83110515A TW 268113 B TW268113 B TW 268113B
Authority
TW
Taiwan
Prior art keywords
dma
memory
data
host
handling device
Prior art date
Application number
TW83110515A
Other languages
Chinese (zh)
Inventor
Kam Patrick
J Devins Robert
Hon Stephen
D Keller Emory
Original Assignee
Ibm
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ibm filed Critical Ibm
Priority to TW83110515A priority Critical patent/TW268113B/en
Application granted granted Critical
Publication of TW268113B publication Critical patent/TW268113B/en

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Abstract

A method and means are provided for simulating a direct memory access (DMA) function to access memory in a host computer having a DMA controller for the purpose of enabling the transfer of data between the host memory and a computer accessory data handling device not capable of DMA operation that can be operably connected to the host including determining the location in the host memory for data to be transferred from the host memory to the accessory data handling device or from the accessory data handling device to the host memory by reading the memory address contents of the DMA controller. Data is read data from the host memory at the address specified in the DMA controller and written to the accessory data handling device or read from the accessory data handling device and written to the host memory at the address specified by the DMA controller, respectively. The host computer is informed that a DMA operation corresponding to the data transfer has been completed when the data transfer required has been completed.
TW83110515A 1994-11-14 1994-11-14 Dma emulation for non-dma capable interface cards TW268113B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW83110515A TW268113B (en) 1994-11-14 1994-11-14 Dma emulation for non-dma capable interface cards

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW83110515A TW268113B (en) 1994-11-14 1994-11-14 Dma emulation for non-dma capable interface cards

Publications (1)

Publication Number Publication Date
TW268113B true TW268113B (en) 1996-01-11

Family

ID=51396858

Family Applications (1)

Application Number Title Priority Date Filing Date
TW83110515A TW268113B (en) 1994-11-14 1994-11-14 Dma emulation for non-dma capable interface cards

Country Status (1)

Country Link
TW (1) TW268113B (en)

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