1978 Apple II Firmware Rom Card Applesoft II Integer Basic missing 74LS09 Chip

Description

1978 Apple II Intelligent Interface Series Applesoft II Integer Basic Chip Firmware ROM Card 600-____-__ missing stock 74LS09
Chip
Works Great!**
Apple II Computer ROM Card with AppleSoft ROMs an Apple II firmware card   Has AppleSoft ROM chips dated in 1978 & 1979
When the switch is in the UP (A) position the computer boots from this card and loads Applesoft II Integer Basic into memory
A / B switch on the back switches out the 12K space provided by the six ROMs on the card for the six ROMs on the motherboard.
Programmer's Aid#1 ROM as well that switches that so you could use either the card's ROMs (
9613B mask ROMs from Apple
) or the motherboard ROMs.
The switch was handy because you could start a game that trapped the reset and then toggle the switch, press reset and you would end up in the monitor instead of program being trapped (see screenshots of Apple II in ROM mode showing current memory assembler).  A
lso s
upports solder button and a bowtie to allow 2716 EPROMs to be used instead.
All ROM date codes from 1978-1979:
1 - 341-0014-00
II+ Integer BASIC D0
8137E
1 - 341-0001-00          II+ Integer BASIC E0 7846E
1 - 341-0002-00          II+ Integer BASIC E8 7847E
1 - 341-0003-00          II+ Integer BASIC F0 7902E
** - 74LS09 missing but stock industry chip - board tested good with
74LS09 from previously sold board
-
74LS138N 8723 Date code
-
74LS74AN 8048 Date code
Used to add Integer BASIC (ie - Applesoft II BASIC) to an Apple ][ or II+ originally marketed
as the Apple II Integer BASIC firmware card
Tested -
In very good working condition:
- Board connectors clean and no corrosion on sockets
- Review pictures as part of the description (zoom to see details and condition)
- Manual for card available online @ a number of Apple II sites
- Tested in monitor mode works great
From Apple's Contact Newsletter volume 2, dated 6/78:
"APPLESOFT II - The new APPLE- SOFT has arrived. It's an expanded version of Microsoft's floating-point BASIC, with 9-digit arithmetic and a large function library that makes it ideal for business and scientific programs. Easy to use and powerful, APPLESOFT II's capabilities include high-resolution graphics routines;DATA STORE/RECALL statements that allow saving vari- ables to tape; IN# and PR# state- ments to simplify peripheral use; and an ONERRGOTO command to allow user-specified error-handling routines.
The tape version (P/N A2T0004) costs , and is available now at your APPLE dealer. A ROM card version (P/N A2B0009), which plugs into slot 0, has hardware and software switching to select either Integer or APPLESOFT BASIC. It frees up 10K of RAM space for your programs. Available in July, the APPLESOFT ROM card's regular price is 0; but through July 31 only, it will be introductory- priced at 0 a genuine bargain."
From Apple's Contact Newsletter volume 6, the catalog dated 10/79:
"Integer BASIC ROM Card ... for the Apple II Plus
Help yourself to the extensive library of Integer BASIC programs with this low cost, plug-in card. You'll have push- button access to both Integer and Applesoft BASIC, without giving up valuable user memory space.
The card offers you more than just a high-speed version of BASIC. ...The Integer BASIC ROM Card is a great way to upgrade the capabilities of your Apple II Plus before you're ready to move all the way into the Language System with Pascal. Suggested Retail- 0.00"
Vintage 40+ year old due to age being sold as-is
In very good condition - some normal use marks - see pictures
See my other auctions for more vintage computing
Stored in climate controlled non-smoking environment
Actual shipping based on weight and volume (& will combine)