Groups
Sign in
Groups
KJ support 討論區
Conversations
Labels
About
Send feedback
Help
何謂DMA and PIO mode? 兩者有何不同?
55 views
電腦網路
Skip to first unread message
nono
unread,
May 10, 2016, 12:38:24 PM
5/10/16
Reply to author
Sign in to reply to author
Forward
Sign in to forward
Delete
You do not have permission to delete messages in this group
Copy link
Report message
Show original message
Either email addresses are anonymous for this group or you need the view member email addresses permission to view the original message
to kjsu...@googlegroups.com
轉自:
http://transcend.com.tw/Support/FAQ-319
何謂DMA and PIO mode? 兩者有何不同?
PIO 譯為(Programmed Input / Output)程控輸入/輸出,是一種傳輸的模式且需要經過處理器的運行,在效能處理速度上比DMA mode慢。反之,DMA (Direct Memory Access)譯為直接記憶體存取,是一種使特定裝置能夠直接讀寫記憶體而不必經過處理器的技術。可減少處理器的負擔,提昇資料傳輸速率。其中DMA mode又可分為Multi-word DMA mode 與 Ultra DMA mode兩種,它們最主要的區別在於傳輸速度上的差異,Ultra DMA mode比 Multi-word DMA mod來得快。
創見的CF75/80/120原廠設定為Multi-word DMA mode,CF133/266/CF 100I 原廠設定為Ultra DMA mode,CF 45I原廠設定為 PIO mode。
*並非每台主機或設備都支援Ultra DMA mode。
請在購買前先行確認是否支援此模式,若並不確定是否支援可洽詢購買之經銷商或是客服部門詢問。
接近可以複製HP硬碟中。
Reply all
Reply to author
Forward
0 new messages