OS/2 Shareware BBS: 10 Tools/10-Tools.zip/S2R10_C.ZIP/S2R10C03.SI

Text File | 1990-03-09 | 10KB | 336 lines

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.heGlossary and Conventions                                                3/9/90
.foSCSI-2 draft proposed American National Standard        3-#      Revision 10c
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.cp 30
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3. Glossary and Conventions
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3.1. Glossary
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ááThi≤ sectioε contain≤ ß glossar∙ oµ specia∞ term≤ useΣ iε thi≤ standard«  ì
Als∩ seσ thσ glossarie≤ fo≥ eacΦ devicσ typσ iε section≤ 8.4¼ 9.4¼ ...¼ 17.4.
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activσ I/╧ process.é  Aε I/╧ proces≤ tha⌠ i≤ presentl∙ iε executioε (no⌠ ì
queued).

AEN.é  Asynchronou≤ even⌠ notificatioε (seσ 6.5.5).

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AWG.é  Americaε Wirσ Gauge.

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byte.é  Iε thi≤ standard¼ thi≤ terφ indicate≤ aε ╕-bi⌠ (octet⌐ construct.

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CA.é  Contingen⌠ Allegiancσ (seσ 6.6).

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commanΣ descripto≥ blocδ (CDB).é  Thσ structurσ useΣ t∩ communicatσ command≤ ì
froφ aε initiato≥ t∩ ß target.

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commanΣ queue.é  Thi≤ terφ refer≤ t∩ thσ queuσ useΣ t∩ storσ thσ taggeΣ I/╧ ì
processe≤ (seσ 6.8.2).

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connect.é  Thσ initiato≥ functioε tha⌠ select≤ ß targe⌠ t∩ establisΦ ß nexu≤ ì
anΣ t∩ star⌠ aε I/╧ process«  Thσ connectioε tha⌠ result≤ i≤ aε initia∞ ì
connection.

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connection.é  Aε initia∞ connectioε o≥ reconnection«  ┴ connectioε caε onl∙ ì
occu≥ betweeε onσ initiato≥ anΣ onσ target«

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contact.é  Thσ electricall∙-conductivσ portioε oµ ß connecto≥ associateΣ witΦ ß ì
singlσ conducto≥ iε ß cable.

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curren⌠ I/╧ process.é  Thσ I/╧ proces≤ tha⌠ i≤ presentl∙ connecteΣ oε thσ SCS╔ ì
bus.

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disconnect.é  Thσ actioε tha⌠ occur≤ wheε aε SCS╔ devicσ release≤ contro∞ oµ ì
thσ SCS╔ bus¼ allowinτ i⌠ t∩ g∩ t∩ thσ BU╙ FRE┼ phase.

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ECA.é  ExtendeΣ Contingen⌠ Allegiancσ (seσ 6.7).

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field.é  ┴ grou≡ oµ onσ o≥ morσ contiguou≤ bits«  Field≤ containinτ onl∙ onσ ì
bi⌠ arσ usuall∙ referreΣ t∩ a≤ thσ x° bi⌠ insteaΣ oµ thσ x° field.

hos⌠ adapter.é  ┴ devicσ whicΦ connect≤ betweeε ß hos⌠ systeφ anΣ thσ SCS╔ bus«  ì
Thσ devicσ usuall∙ perform≤ thσ lowe≥ layer≤ oµ thσ SCS╔ protoco∞ anΣ normall∙ ì
operate≤ iε thσ initiato≥ role«  Thi≤ functioε ma∙ bσ integrateΣ int∩ thσ hos⌠ ì
system.

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initia∞ connection.é  Aε initia∞ connectioε i≤ thσ resul⌠ oµ ß connec⌠ anΣ i⌠ ì
exist≤ froφ thσ assertioε oµ thσ BS┘ signa∞ iε ß SELECTIO╬ phasσ unti∞ thσ ì
nex⌠ BU╙ FRE┼ phasσ occurs.

.cp 3èinitiator.é  Aε SCS╔ devicσ (usuall∙ ß hos⌠ system⌐ tha⌠ request≤ aε I/╧ ì
proces≤ t∩ bσ performeΣ b∙ anothe≥ SCS╔ devicσ (ß target).

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invalid.é  Aε illega∞ (reserved⌐ o≥ unsupporteΣ bit¼ field¼ o≥ codσ value.

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I/╧ process.é  Aε I/╧ proces≤ consist≤ oµ onσ initia∞ connectioε anΣ zer∩ o≥ ì
morσ reconnections¼ al∞ pertaininτ t∩ ß singlσ commanΣ o≥ ß grou≡ oµ linkeΣ ì
commands«  Morσ specifically¼ thσ connection(s⌐ pertaiε t∩ ß nexu≤ a≤ defineΣ ì
belo≈ iε whicΦ zer∩ o≥ morσ commanΣ descripto≥ block≤ arσ transferred«  Aε I/╧ ì
proces≤ begin≤ witΦ thσ establishmen⌠ oµ ß nexus«  Aε I/╧ proces≤ normall∙ ì
end≤ witΦ thσ BU╙ FRE┼ phasσ followinτ successfu∞ transfe≥ oµ ß COMMAN─ ì
COMPLET┼ o≥ ß RELEAS┼ RECOVER┘ message«  Aε I/╧ proces≤ als∩ end≤ witΦ thσ BU╙ ì
FRE┼ phasσ followinτ aε ABORT¼ ABOR╘ TAG¼ BU╙ DEVIC┼ RESET¼ o≥ CLEA╥ QUEU┼ ì
messagσ o≥ wheε ß harΣ RESE╘ conditioε o≥ aε unexpecteΣ disconnec⌠ occurs.

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I_╘ nexus«  ┴ nexu≤ whicΦ exist≤ betweeε aε initiato≥ anΣ ß target.

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I_T_╠ nexus«  ┴ nexu≤ whicΦ exist≤ betweeε aε initiator¼ ß target¼ anΣ ß ì
logica∞ unit«  Thi≤ relationshi≡ replace≤ thσ prio≥ I_╘ nexus.

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I_T_╥ nexus«  ┴ nexu≤ whicΦ exist≤ betweeε aε initiator¼ ß target¼ anΣ ß ì
targe⌠ routine«  Thi≤ relationshi≡ replace≤ thσ prio≥ I_╘ nexus.

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I_T_° nexus.é  ┴ nexu≤ whicΦ i≤ eithe≥ aε I_T_╠ o≥ I_T_╥ nexus.

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I_T_L_╤ nexus«  ┴ nexu≤ betweeε aε initiator¼ ß target¼ ß logica∞ unit¼ anΣ ß ì
queuσ taτ followinτ thσ successfu∞ receip⌠ oµ onσ oµ thσ queuσ taτ messages«  ì
Thi≤ relationshi≡ replace≤ thσ prio≥ I_T_╠ nexus.

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I_T_x_∙ nexus.é  ┴ nexu≤ whicΦ i≤ eithe≥ aε I_T_° o≥ I_T_L_Q.

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logica∞ unit.é  ┴ uni⌠ oµ datß supplieΣ o≥ requesteΣ b∙ aε initiator.

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logica∞ unit.é  ┴ physica∞ o≥ virtua∞ periphera∞ devicσ addressablσ througΦ ß ì
target.

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logica∞ uni⌠ number.é  Aε encodeΣ threσ-bi⌠ identifie≥ fo≥ thσ logica∞ unit.

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LSB.é  Leas⌠ significan⌠ bit.

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LUN.é  Logica∞ uni⌠ number.

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mandatory.é  Thσ referenceΣ iteφ i≤ requireΣ t∩ claiφ compliancσ witΦ thi≤ ì
standard.

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mm.é  Millimeter.

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ms.é  Millisecond.

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MSB.é  Mos⌠ significan⌠ bit.

.cp 6ènexus.é  ┴ relationshi≡ tha⌠ begin≤ witΦ thσ establishmen⌠ oµ aε initia∞ ì
connectioε anΣ end≤ witΦ thσ completioε oµ thσ I/╧ process«  Thσ relationshi≡ ì
ma∙ bσ restricteΣ t∩ specif∙ ß singlσ logica∞ uni⌠ o≥ targe⌠ routinσ b∙ thσ ì
successfu∞ transfe≥ oµ aε IDENTIF┘ message«  Thσ relationshi≡ ma∙ bσ furthe≥ ì
restricteΣ b∙ thσ successfu∞ transfe≥ oµ ß queuσ taτ message.

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ns.é  Nanosecond.

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one.é  ┴ truσ signa∞ valuσ o≥ ß truσ conditioε oµ ß variable.

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optional.é  Thσ referenceΣ iteφ i≤ no⌠ requireΣ t∩ claiφ compliancσ witΦ thi≤ ì
standard.

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page.é  Severa∞ command≤ usσ regula≥ paramete≥ structure≤ tha⌠ arσ referreΣ t∩ ì
a≤ pages«  Thesσ page≤ arσ identifieΣ witΦ ß valuσ knowε a≤ ß pagσ code.

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parameter.é  ┴ structurσ containinτ onσ o≥ morσ fields.

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periphera∞ device.é  ┴ physica∞ periphera∞ devicσ tha⌠ caε bσ attacheΣ t∩ aε ì
SCS╔ device¼ whicΦ connect≤ t∩ thσ SCS╔ bus«  Thσ periphera∞ devicσ anΣ thσ ì
SCS╔ devicσ (periphera∞ controller⌐ ma∙ bσ physicall∙ packageΣ together«  ì
Ofteε therσ i≤ ß onσ-t∩-onσ mappinτ betweeε periphera∞ device≤ anΣ logica∞ ì
units¼ bu⌠ thi≤ i≤ no⌠ required«  Example≤ oµ periphera∞ device≤ are║ magnetiπ ì
disks¼ printers¼ optica∞ disks¼ anΣ magnetiπ tapes.

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queuσ tag.é  Thσ valuσ associateΣ witΦ aε I/╧ proces≤ tha⌠ uniquel∙ identifie≤ ì
i⌠ froφ othe≥ queueΣ I/╧ processe≤ oε thσ logica∞ uni⌠ fo≥ thσ samσ initiator.

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queueΣ I/╧ process.é  Aε I/╧ proces≤ tha⌠ i≤ iε thσ commanΣ queuσ anΣ ha≤ no⌠ ì
beguε execution.

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reconnect.é  Thσ ac⌠ oµ revivinτ ß nexu≤ t∩ continuσ aε I/╧ process«  ┴ targe⌠ ì
reconnect≤ t∩ aε initiato≥ b∙ usinτ thσ RESELECTIO╬ anΣ MESSAG┼ I╬ phase≤ ì
afte≥ winninτ arbitration«  Aε initiato≥ reconnect≤ t∩ ß targe⌠ b∙ usinτ thσ ì
SELECTIO╬ anΣ MESSAG┼ OU╘ phase≤ afte≥ winninτ arbitratioε (seσ 6.5.2).

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reconnection.é  ┴ reconnectioε i≤ thσ resul⌠ oµ ß reconnec⌠ anΣ i⌠ exist≤ froφ ì
thσ assertioε oµ thσ BS┘ signa∞ iε ß SELECTIO╬ o≥ RESELECTIO╬ phasσ unti∞ thσ ì
nex⌠ BU╙ FRE┼ phasσ occurs.

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reserved.é  Thσ terφ useΣ fo≥ bits¼ fields¼ anΣ codσ value≤ tha⌠ arσ se⌠ asidσ ì
fo≥ futurσ standardization.

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SCSI.é  Eithe≥ SCS╔-▒ o≥ SCS╔-2.

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SCS╔-1.é  Thσ Smal∞ Compute≥ Systeφ Interfacσ (X3.13▒-1986).

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SCS╔-2.é  Thσ Smal∞ Compute≥ Systeφ Interfacσ ¡ ▓ (X3.13▒-198X).

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SCS╔ address.é  Thσ octa∞ representatioε oµ thσ uniquσ addres≤ (░-7⌐ assigneΣ ì
t∩ aε SCS╔ device«  Thi≤ addres≤ woulΣ normall∙ bσ assigneΣ anΣ se⌠ iε thσ ì
SCS╔ devicσ durinτ systeφ installation.

.cp 3èSCS╔ ID.é  Thσ bi⌠-significan⌠ representatioε oµ thσ SCS╔ addres≤ referrinτ t∩ ì
onσ oµ thσ signa∞ line≤ DB(╖-0).

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SCS╔ device.é  ┴ hos⌠ adapte≥ o≥ ß targe⌠ controlle≥ tha⌠ caε bσ attacheΣ t∩ ì
thσ SCS╔ bus.

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signa∞ assertion.é  Thσ ac⌠ oµ drivinτ ß signa∞ t∩ thσ truσ state.

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signa∞ negation.é  Thσ ac⌠ oµ drivinτ ß signa∞ t∩ thσ falsσ statσ o≥ allowinτ ì
thσ cablσ terminator≤ t∩ bia≤ thσ signa∞ t∩ thσ falsσ statσ (b∙ placinτ thσ ì
drive≥ iε thσ higΦ impedancσ condition).

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signa∞ release.é  Thσ ac⌠ oµ allowinτ thσ cablσ terminator≤ t∩ bia≤ thσ signa∞ ì
t∩ thσ falsσ statσ (b∙ placinτ thσ drive≥ iε thσ higΦ impedancσ condition).

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status.é  Onσ bytσ oµ informatioε sen⌠ froφ ß targe⌠ t∩ aε initiato≥ upoε ì
completioε oµ eacΦ command.

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target.é  Aε SCS╔ devicσ tha⌠ perform≤ aε operatioε requesteΣ b∙ aε initiator.

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targe⌠ routine.é  ┴ targe⌠ routinσ i≤ aε I/╧ proces≤ directeΣ t∩ ß target¼ anΣ ì
no⌠ t∩ ß logica∞ unit.

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thirΣ-party.é  Wheε useΣ iε referencσ t∩ COP┘ commands¼ thirΣ-part∙ mean≤ ß ì
COP┘ commanΣ issueΣ t∩ onσ devicσ t∩ perforφ ß cop∙ operatioε betweeε tw∩ ì
othe≥ devices«  Wheε useΣ iε referencσ t∩ RESERVE¼ o≥ RELEAS┼ commands¼ thirΣ-ì
part∙ mean≤ ß reservatioε madσ oε behalµ oµ anothe≥ devicσ (e.g.¼ ┴ processo≥ ì
devicσ request≤ tha⌠ ß direc⌠-acces≤ devicσ reservσ itselµ fo≥ exclusivσ usσ ì
b∙ ß sequentia∞-acces≤ device).

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unexpecteΣ disconnect.é  ┴ disconnectioε tha⌠ occur≤ a≤ ß resul⌠ oµ ß protoco∞ ì
erro≥ (seσ 5.1.1).

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us.é  Microsecond.

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vendo≥ specifiπ (VS).é  Somethinτ (e.g.¼ ß bit¼ field¼ codσ value¼ etc.⌐ tha⌠ ì
i≤ no⌠ defineΣ b∙ thi≤ standarΣ anΣ ma∙ bσ useΣ differentl∙ iε variou≤ ì
implementations.

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xx.é  Number≤ tha⌠ arσ no⌠ immediatel∙ followeΣ b∙ lowe≥-casσ "bó o≥ "hó arσ ì
decima∞ values«  Largσ Number≤ arσ no⌠ separateΣ b∙ comma≤ o≥ space≤ (e.g.¼ ì
12345╗ no⌠ 12,34╡ o≥ 1▓ 345).

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xxb.é  Number≤ immediatel∙ followeΣ b∙ lowe≥-casσ "bó arσ binar∙ values.

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xxh.é  Number≤ immediatel∙ followeΣ b∙ lowe≥-casσ "hó arσ hexadecima∞ values.

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zero.é  ┴ falsσ signa∞ valuσ o≥ ß falsσ conditioε oµ ß variable.


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3.2. Editoria∞ Conventions
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ááCertaiε word≤ anΣ term≤ useΣ iε thi≤ standarΣ havσ ß specifiπ meaninτ beyonΣ ì
thσ norma∞ EnglisΦ meaning«  Thesσ word≤ anΣ term≤ arσ defineΣ eithe≥ iε thσ ì
glossar∙ (seσ 3.▒ anΣ 8.4¼ 9.4¼ ...¼ 17.4⌐ o≥ iε thσ tex⌠ wherσ the∙ firs⌠ ì
appear«  Name≤ oµ signals¼ phases¼ messages¼ commands¼ statuses¼ sensσ keys¼ ì
additiona∞ sensσ codes¼ anΣ additiona∞ sensσ codσ qualifier≤ arσ iε al∞ ì
uppercasσ (e.g.¼ REQUES╘ SENSE)«  Lowe≥ casσ i≤ useΣ fo≥ word≤ havinτ thσ ì
norma∞ EnglisΦ meaning.

..end of section
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áá                     (Thi≤ pagσ i≤ intentionall∙ blank.)
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