| Revision Code, Issue Date | Comments |
| 0.80, 12/23/93 | 1st Draft, edited from PnP COM Enumerator Specification 0.8 |
| 0.82, 1/10/94 | Second Draft, simplified COM ID specifications |
| 0.83, 1/19/94 | Add EISA references, 1st public version |
| 0.84 | Add patent disclaimer, etc |
| 0.86, 2/16/94 | Revise as per 1st comments:
a) two phase enumeration: simple mice and modems
b) Increase timer tolerances to 35 ms
c) fix format of Product ID and Serial Number
d) add provisions for multiple ID sets, w/example
e) Add checksum to optional IDs
f) revise Patent Disclaimer as per MS legal
g) retitle to External COM Device, Draft Specification |
| 0.86a | a) fix assorted typos, particularly discrepancies in description of PnP ID strings.
b) modified definition of checksum. |
| 0.87, 4/28/94 | Define Timer T4 in 2.1.6, to limit the time the enumerator will wait for the complete PnP ID string. |
| 0.90, 6/6/94 | a) reverse order of enumeration phases:
- revise Figure 1, reverse 2.1.2 and 2.1.4
b) increase T4 timeout
c) define T5 per-character timeout
d) clearup conflict in multiple ID delimiter character (;)
e) prohibit BeginPnP and EndPnP characters within IDs
f) allow <CR><LF> characters within IDs
g) various other italicized notes included.
h) correct Table A-1 Title in TOC
i) change byte order of checksum to match rest of ID |
| 0.92, 6/18/94 | a) add Annex C, to list defined Chicago Class names
b) correction: comma character is 0x2C, not 0x27. |
| 0.93, 7/8/94 | a) add checksum examples
b) add note on * in PNP compatible IDs |
| 0.94, 7/26/94 | a) add notes about problems with UPS devices
b) add acknowledgements
c) dd note prohibiting use of invented class names |
| 0.95, 8/19/94 | a) corrections to handle some modems, including new 2.1.2 to check for any device, add Verify Disconnect
b) renumber timers
c) corrections to sample responses, Tables 4 and 5
d) implementation notes in Annex A.4 on &D3 issues |
| 0.96, 9/7/94 | a) remove asterisks from compatible IDs.
b) revise Abstract
c) revise descriptions of Enumerator internal behavior
d) simplify Table 5 |
| 0.99, 10/20/94 | a) added TABLET Class name in Table C-1.
b) release (?) |
| 0.99C, 1/3/95 | a) revised Table C-1 |
| 0.99D, 2/17/95 | a) deleted "Another ID capability"
b) deleted Table 5
c) added modem control standard references |