SB180 Floppy Disk capacities

[whartung]

The SB180 supports Double Sided, Double Density, 40/80 track 5 1/4 and 3 1/2 floppies. 48 tpi and 96 tpi.

How big are these floppies? 720K? Are the 5 1/4 and 3 1/2 the same capacity? Can't seem to get a solid number anywhere.

 

[ldkraemer]

The CP/M Definition I have for Micromint SB180 is:

Sectors 10
Sector Size is 512
Tracks 80 (or 40)
Sides 2

(((512 * 10) * 2) * 80) = 819,200 or 409,600 for 40 Track


IMageDisk Utility 1.18 / Mar 07 2012
IMD TD 1.5 5.25 LD MFM S-step, 2 sides ADV 23/09/1995 16:45:13

ZCPR3 Release 2 System disk for Micromint SB180

DSDD 512 byte sector, 17-26, 2:1

Assuming 1:1 for Binary output
0/0 250 kbps DD 10x512
17 22 18 23 19 24 20 25 21 26
D D D D D D D D D D
0/1 D D D D D D D D00 D D00
1/0 D D D DE5 D DE5 D D D D
1/1 DE5 D DE5 D D D D DE5 D DE5
2/0 D DE5 D DE5 D DE5 D D D DE5
2/1 DE5 DE5 DE5 D D D DE5 D DE5 DE5
3/0 D D D D D D D D D D
3/1 D DE5 D D D D DE5 D DE5 DE5
4/0 D D DE5 D DE5 D DE5 D D D
4/1 DE5 D DE5 D D D D D D D
5/0 D D DE5 D DE5 D DE5 D D D
5/1 D DE5 D D D D DE5 DE5 DE5 DE5
6/0 D DE5 D DE5 D DE5 D D D D
6/1 DE5 D DE5 D D D D DE5 D DE5
7/0 D D D D D D D D D D
7/1 D DE5 DE5 D D D D D DE5 D
8/0 D D D D D DE5 D D D D
8/1 D D D D D DE5 D DE5 D DE5
9/0 D D D D D D DE5 D D D
9/1 D D DE5 D D D D DE5 D DE5
10/0 D D D DE5 D DE5 D D D D
10/1 D D D D D D D D D D
11/0 D D D D D D D D D D
11/1 DE5 D DE5 D D DE5 D DE5 D DE5
12/0 D D DE5 D DE5 D DE5 D D D
12/1 D DE5 D D D D DE5 D DE5 DE5
13/0 D DE5 D DE5 D DE5 D D D D
13/1 DE5 DE5 DE5 D D DE5 D DE5 DE5 DE5
14/0 D D D D D D D D D D
14/1 D DE5 D D D D D DE5 D DE5
15/0 D D D DE5 D DE5 D D D D
15/1 D D D D D D D D D D
16/0 D D DE5 D DE5 D DE5 D D DE5
16/1 DE5 DE5 DE5 D D DE5 DE5 DE5 DE5 DE5
17/0 D D D D D D D D D D
17/1 DE5 D DE5 D D DE5 D DE5 D DE5
18/0 D D D D D D D D D D
18/1 D D DE5 D D D D D D D
19/0 D D D D D D D D D D
19/1 D D00 D D D D D00 D D00 DE5
20/0 D D D DE5 D DE5 D D D DE5
20/1 DE5 D DE5 D D D D D D D
21/0 D D DE5 D DE5 D DE5 D D D
21/1 D DE5 D D D D D D D D
22/0 D D D DE5 D DE5 DE5 D D DE5
22/1 DE5 DE5 DE5 D D D D DE5 DE5 DE5
23/0 D D D D D DE5 D D D D
23/1 DE5 DE5 DE5 D D D DE5 D DE5 D
24/0 D D D D D D DE5 D D D
24/1 D DE5 DE5 D D D D D DE5 D
25/0 D DE5 D DE5 DE5 DE5 DE5 D D D
25/1 D D D D D D D D D D
26/0 D D D DE5 D DE5 D D D D
26/1 D DE5 D D D D D D DE5 D
27/0 D DE5 DE5 DE5 DE5 DE5 DE5 D D D
27/1 D D D D D D D D D D
28/0 D D D D D D D D D D
28/1 D D DE5 D D D D D D DE5
29/0 D D D D D D D D D D
29/1 D D D D D D D D D D
30/0 D DE5 D DE5 D DE5 D D D D
30/1 D D D D D D D D D D
31/0 D D D D D D D D D D
31/1 D D DE5 D D DE5 D DE5 D DE5
32/0 D D D D D D D D D D
32/1 DE5 DE5 DE5 D D D D D D D
33/0 D D D D D D DE5 D D D
33/1 D D D D D D D D D D
34/0 D D D DE5 D DE5 D D D D
34/1 D D D D D D D D D D
35/0 D DE5 D DE5 D DE5 D D D D
35/1 D D DE5 D D D D D D D
36/0 D D D D DE5 D DE5 D D D
36/1 D D D D D D D D D D
37/0 D D D D00 D D00 D DE5 D DE5
37/1 DE5 DE5 DE5 DE5 DE5 DE5 DE5 DE5 DE5 DE5
38/0 DE5 DE5 DE5 DE5 DE5 DE5 DE5 DE5 DE5 DE5
38/1 DE5 DE5 DE5 DE5 DE5 DE5 DE5 DE5 DE5 DE5
39/0 DE5 DE5 DE5 DE5 DE5 DE5 DE5 DE5 DE5 DE5
39/1 DE5 DE5 DE5 DE5 DE5 DE5 DE5 DE5 DE5 DE5
80 tracks(40/40), 800 sectors (223 Compressed)


# MM1 Micromint SB180 Native 1 - DSDD 48 tpi 5.25" - 512 x 10
diskdef mm1
seclen 512
tracks 80
sectrk 10
secbase 17
blocksize 2048
maxdir 128
skew 1
boottrk 2
os 2.2
end



cpmls -f mm1 -D MMSB180A.RAW
Name Bytes Recs Attr update create
------------ ------ ------ ---- ----------------- -----------------
-SYSTEM .MAS 2K 1
HELLO . 2K 2
START .COM 2K 8

User 15:

Name Bytes Recs Attr update create
------------ ------ ------ ---- ----------------- -----------------
AC .COM 6K 33
ALIAS .COM 4K 30
CB .COM 2K 2
CD .COM 2K 7
CLEANDIR.COM 2K 15
CMDRUN .COM 2K 2
COMMENT .COM 2K 5
COMP .COM 4K 24
CONFIG .COM 6K 43
CPSEL .COM 2K 8
CRC .COM 6K 41
DEV .COM 2K 14
DEVICE .COM 4K 17
DFA .COM 2K 12
DIFF .COM 4K 25
DIR .COM 2K 16
DIRV .COM 4K 22
DPROG .COM 4K 24
DU3 .COM 12K 87
DUMP .COM 4K 17
ECHO .COM 2K 4
EDIT .COM 2K 16
ERASE .COM 4K 20
ERROR1 .COM 2K 12
ERROR23 .COM 4K 20
ERROR3 .COM 2K 5
ERROR4 .COM 2K 5
ERRORX .COM 2K 3
FINDF .COM 2K 14
FVC .COM 6K 42
GOTO .COM 2K 6
HELP .COM 4K 24
HELPCK .COM 2K 16
HELPPR .COM 6K 35
IF .COM 4K 20
IFSTAT .COM 2K 3
INIT .IOP 2K 1
LDR .COM 4K 22
MCOPY .COM 6K 33
MDSK .COM 2K 2
MENU .COM 6K 37
MENUCK .COM 4K 17
MKDIR .COM 6K 42
MOVZSYS .COM 14K 106
MU3 .COM 4K 24
NOTE .COM 2K 2
PAGE .COM 6K 36
PATH .COM 2K 11
PRINT .COM 6K 42
PROTECT .COM 4K 28
PWD .COM 2K 8
QUIET .COM 2K 4
RECORD .COM 2K 8
REG .COM 2K 8
RENAME .COM 4K 27
SAK .COM 2K 8
SETFILE .COM 2K 4
SFA .COM 4K 25
SH .COM 4K 28
SHCTRL .COM 2K 7
SHDEFINE.COM 4K 23
SHFILE .COM 2K 4
SHOW .COM 8K 62
SHSET .COM 2K 7
SHVAR .COM 4K 23
SUB .COM 4K 20
SYS .ENV 2K 2
SYS .FCP 2K 4
SYS .NDR 2K 2
SYS .RCP 2K 15
SYSGEN .COM 2K 15
TCCHECK .COM 2K 14
TCMAKE .COM 6K 47
TCSELECT.COM 4K 22
TIME .COM 2K 11
UNERASE .COM 2K 13
VF-SMPLE.CMD 2K 11
VFILER .COM 14K 99
VID .COM 2K 12
VIEW .COM 4K 32
VMENU .COM 8K 60
VMENUCK .COM 4K 18
VTYPE .COM 6K 40
WHEEL .COM 2K 11
XD .COM 4K 28
XDIR .COM 8K 62
Z3INS .COM 2K 15
Z3LOC .COM 2K 8
Z3TCAP .TCP 10K 67
ZCPR3 .INS 2K 11
ZEX .COM 6K 40
ZSYSTEM .MDL 12K 96
95 Files occupying 360K, 26K Free.


Larry

 

[whartung]

The CP/M Definition I have for Micromint SB180 is:

Sectors 10
Sector Size is 512
Tracks 80 (or 40)
Sides 2

(((512 * 10) * 2) * 80) = 819,200 or 409,600 for 40 Track

...

95 Files occupying 360K, 26K Free.

Thank you Larry, I appreciate the work done here. However, most of it is gibberish to me.

It looks like the 48tpi disk is roughly 400K raw capacity, and I assume the 96tpi will be 800K?

Thanks so much for your time.

This is useful.