Agilent J7231B Communication analyzer
Agilent J7231B Communication analyzer
Standard hardware circuitry reserves only 1,024 byte of I/O addressing space from I/O $000 to $3FF for peripherals. All standard PC I/O peripherals, such as serial and parallel ports, hard and floppy drive controllers, video system, real-time clock, system timers and interrupt controllers are addressed in this region of I/O space. The BIOS initializes and configures all these registers properly; adjusting these I/O ports directly is not normally necessary. The assigned and user-available I/O addresses are summarized in the I/O Address Map, Table 2-2.DMA Controller 1 (Intel 8237A Compatible) $010 - $01F 16 Reserved $020 - $021 2 Master Interrupt Controller (Intel 8259A Compatible) $022 - $03F 30 Reserved $040 - $043 4 Programmable Timer (Intel 8254 Compatible)
Professional team
1.Our large inventory contains current and obsolete products. For all outdated and legacy automation, our internal team tests every part before shipment, and all parts sold by AMIKON are actually in stock, which makes emergency transportation a simple solution to solve the emergency shutdown situation.
2.In the automation industry, if you are looking for new surplus products or discontinued parts, our knowledgeable and friendly colleagues can help you get what you need. With our competitive price, we will be proud to provide you with the required parts inventory
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