Two minor blog post editorial tweaks

jeffpar · Mar 17, 2018 · 589be73 · 589be73
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diff --git a/_posts/2018-02-25-a-short-history-of-symdeb.md b/_posts/2018-02-25-a-short-history-of-symdeb.md
@@ -80,7 +80,8 @@ since only about four months separated them):
     Version 3.01
     (C)Copyright Microsoft Corp 1984, 1985
 
-And before SYMDEB Version 3.01, there was Version 3.00, which was about six months older:
+And before that, SYMDEB Version 3.00 was bundled with [Microsoft Macro Assembler 3.00](/disks/pcx86/tools/microsoft/masm/3.00/),
+which was about six months older:
 
     SYMDEB   EXE    27136  12-07-84   1:39p
 

diff --git a/_posts/2018-03-16-mysteries-of-the-ibm-serial-adapter.md b/_posts/2018-03-16-mysteries-of-the-ibm-serial-adapter.md
@@ -130,7 +130,7 @@ And the IBM PC AT Serial/Parallel Reference Manual says:
     This bit controls-the' -Output 2' (-OUT 2) signal, which is a spare the programmer can use. Bit 3
     affects the '-OUT 2' output in the same way bit 0 affects the '-DTR' output.
 
-Yes, there *is* a tiny extra comment in the later manual (`Pin 31 controls interrupts to the system.`),
+Yes, there *is* a tiny extra comment in the later manual (`Pin 31 controls interrupts to the system`),
 but it's in the hardware section, not the programming section.  And, yes, the schematics do reveal that
 "OUT 2" controls delivery of the "INTRPT" signal: